Reddit:
The vision in my mind of a typical 'Redditor' is one who hits a link, arrives at your site, glances at the content, goes back to Reddit, repeat for another link at a pace and schedule you could set your watch to. When talking about frequency, we do get significantly more traffic from Reddit than Digg on a day to day basis. But one front page story on Digg will in just a few hours easily surpass 2 weeks worth of Reddit traffic, to which our battered server can testify.

StumbleUpon:
StumbleUpon was one of those sites I deliberately avoided early on. Submitting our own articles on StumbleUpon has returned some good results, but our submissions pale in comparison to one getting picked up by a high profile user. When this happens, we easily get more traffic spread out over a week than we get from Digg. As an example, one particular article had 115,000 visitors from Digg over about 6 hours, but the same article which got picked up on StumbleUpon over 2 weeks later saw 55,000 visitors spread out over a week.

Stumblers love to comment, and they love to let you know where they came from: "I stumbled in!" is a typical start to a comment. And they love to look around. They are a unique breed of web surfer who are on a mission to find anything and everything interesting to share with others. Not only that, Stumblers keep coming back and many subscribe to our newsletter and RSS feeds. In fact while composing this article we got 2 more newsletter subscribers who say they came in from StumbleUpon.

Google makes it clear that it disapproves of certain SEO tactics, such as hiding keywords with invisible text, or showing one page to Google's spider and another to actual human visitors.Methods that conform to what the search engines like are called White Hat SEO, and disapproved methods are called Black Hat SEO. There is a lot of controversy about whether Black Hat SEO is really "bad" in the ethical sense. White Hatters say that Black Hatters are unfairly trying to manipulate the SERPs. Black Hatters counter, "What constitutes 'fair'? Isn't any change you make to your page for SEO purposes an attempt to influence rankings? Why is one method less pure than another when we're all just trying to get our pages to rank higher? Further, if an engine is ranking a bunch of irrelevant sites above mine, what's so wrong about using any method at my disposal to get my relevant site ranked above them? Doing so doesn't benefit just me, it benefits the searchers because it gives them what they're searching for. And it also benefits the engine, because searchers will think better of the engine for giving them more relevant results than it would have otherwise."

Adding to the controversy about Black Hat SEO is the fact Google does allow a certain select few sites to operate contrary to its own stated policies. Danny Sullivan complains that Google's cloaking policy is inconsistent (more on cloaking below), and that the policy wording should be updated. He further notes that the reason Google allows some cloaking is that it improves searching rather than hinders it, and that it's therefore inappropriate to think of cloaking as synonymous with "bad".

Whether you think Black Hat SEO is bad or not you should avoid it anway, because it can get you banned from the search engines, or at least reduce your ranking. Google has been known to remove sites it felt weren't playing fair. Granted, this isn't likely, but why take that risk? Also, much Black Hat SEO involves some fairly technical work. If this article is your introduction to SEO, you likely don't have the skills to be a successful Black Hatter anyway -- at least one who doesn't get caught.

If you want to achieving good ranking in various search engine than must be follows these rules:
1) Don’t use hidden content for your web page.
2) Don’t use directory submission software

1) Hidden content is the content which not shows to the viewer but search engine spider can read it. Some seo experts use this concept for keywords stuffing. By using this concept it give good ranking but for short time. Various search engines does not support this concepts such as yahoo, google and msn etc.
2) Directory submission software is a web application through this application you submit your website in various website and various search engine but it is help full for very short time after that it goes down your website ranking as well as page rank.
Use meaning full as well as distractive content for your web page which is gives complete information to the viewer. Directory submission is very important process search the directory list and submits the directory manually.

Can we get visitors by leaving our comments on other blogs or websites?,Well the answer is yes.But there are some points that needs to be considered.First Post comments on other sites with a link pointing back to your site.How many of us Click the commentators name to visit their site?.Because more people left their comments on other sites normally but you have to get attention from other readers by leaving insightful comments although you get the attention of author easily.
As far as I concerned,I get more visitors by leaving comments on other blogs and websites.Commenting often on popular sites will bring you visitors and commenting on do-follow sites will bring you traffic as well as your site get's quickly indexed in the search results.As far as I concerned,commenting on the chat widgets like Cbox,shoutmix etc.., will bring more visitors for me rather than commenting on the blog posts,but it doesnt give you a backlink if you comment on the Chat widget of a do-follow site.The reason iscommenting on Chat widgets is easy when compared to commenting on Blog posts but you need to get the readers attention(i.e Trick).Posting Comments often on Blog posts of popular blogs will bring you visitors definitely eventhough you dont get massive amounts of traffic but surely you get the attention of some other sites which will give you traffic by linking anyone of your posts if your site was flourished with good content.I found my small banner(they added my code) in many sites in which I just made a comment on their Chat widgets.Commenting on related blogs will brings you more chances of bringing relevant Link Exchange.You should be an expert in something thats,y experts get traffic.This way to get traffic requires patience though but we have to follow all things required for traffic and to become a successful blogger.

Flickr is an image and video hosting website, web services suite, and online community platform. It was one of the earliest Web 2.0 applications. In addition to being a popular Web site for users to share personal photographs, the service is widely used by bloggers as a photo repository.Its popularity has been fueled by its organization tools, which allow photos to be tagged and browsed by folksonomic means.As of November 2007(update),it claims to host more than 2 billion images.

Here are the items you should complete:

Buddy Icon. The avatar size is a small 48 x 48 so upload and use an avatar that is noticeable and visually appealing. You can either use your favorite image, company logo or site brand.

Screen name: You would have already chosen this earlier but you can edit it now if necessary. McGee suggests that you could use your site URL as the screen name but I don’t think that’s really important. You can use the handle that you’ve always used around the web or simply go with your brand, site title or an abbreviated version of your name.

Profile: Write a little about yourself or your business and include some relevant links (link to your About page etc). HTML is accepted so use proper anchor text links instead of a string of URLs. You might want to add in your location and some of your interests to personalize your profile even more.

Your Flickr Web Addresses: You can create your own Flickr web address which makes it easier to share your pictures with others.

Pijoo is a blog directory, a social network, and a social voting site all rolled into one. By adding your blog to Pijoo, you can get more hits, more readers, and a whole bunch of new contacts from the blogosphere, as well as being able to track your visitors, build a community around your blog and keep up with the latest posts from other blogs.

The layout is very easy to navigate. Tabs are used to easily flip through the various pages on the site. This allows you to view other bloggers profiles, send them messages and add them as friends. You can also create and join groups for discussion of specific topics.All of this creates a very visible and open community, where bloggers can network and socialize.

Pijoo also has a paid membership ($30 lifetime) They refer to this as a “Sponsor” account. This paid account opens up a few more options to the members such as ability to add unlimited blogs to your account. Also priority listing on the ‘blogs’ page, detailed blog traffic stats, Ability to ‘broadcast’ messages to the network and more.

Plurk is a free social networking and micro-blogging service that allows users to send updates (otherwise known as plurks) through short messages or links, which can be up to 140 text characters in length.
Users can respond to other users' updates from their timeline through the Plurk.com website, by instant messaging, or by text messaging.Plurk was developed by and envisioned as a communication medium meant to form a balance between blogs and social networks, and between e-mail messaging and instant messaging.
Plurk's interface shows updates in horizontal form through a scrollable timeline written in AJAX. Users can post new messages with optional 'qualifiers', which are one-word verbs used to represent a thoughts. There are also advanced features such as sending updates only to a subset of your friends, posting updates on events earlier in the day, and sharing images, videos, and other media.Plurk also supports group conversations between friends and allows usage of emoticons together with the usual text micro-bloggingPlurk has often been considered to be a rival to Twitter, an earlier micro-blogging service.Here are some few tips:

Only add real friends to your friends list and limit your friends list to your closest buddies.

Try not to plurk more than 30 times a day - your friends may consider it annoying.

Don't share personal information in your plurks - definitely don't share social security numbers, credit card numbers, etc.

Respond to existing plurks, create new plurks when necessary.

Learn to use the plurk privacy options and be careful about what you say about others.

What is Reddit?
Reddit is a social bookmarking Web site that works much like Furl and del.icio.us: you register a username and password, and then start submitting and sharing your bookmarks. Reddit is similar to del.icio.us in that users are encouraged to vote on the links and stories that they feel are deserving of being in the top dog spot: it’s kind of a popularity contest, so to speak.
How does Reddit work?
Not only can you use Reddit to share and discover new Web sites, you can also explore the Reddit subnetworks, called subReddits. Basically, these are channels of particular topics such as Science, Culture, and Programming. In addition to these channels, Reddit also owns Lipstick, a subreddit that is a social bookmarking site specifically aimed towards gossip and entertainment news.
Why should I use Reddit?
I tend to use Reddit to find Web sites that are off the beaten path, so to speak - I find that Reddit's user base has very eclectic tastes and I almost always find something that is well worth a return visit to find even more good stuff.