One of the latest fad among social networking has been the use of Twitter ,which mainly uses the concept of microblogging.Infact once you have created a twitter id, and you click the "Home" option,you will be directed to a page which says "What are you doing?". Also,through twitter,we can follow people and also allow other people to follow you. Each entry that we make in twitter is known as a "tweet".And all the people who are using/logged in twitter are known as "tweeple".Also if people who follow you feel that your tweet is useful/informative ,they can retweet it and make it inturn visible for their followers.

From the Search Engine Optimization(SEO) point of view,most people use twitter to widely increase traffic to their sites.If you can tweet regular updates regarding your business or organization,your clients can also be up-to-date with all the happenings.Additionally you can drive immense traffic only if there are many followers to your twitter id. In other words twitter can be utilized as a Search Engine Marketing(SEM) tool.

However posting any links in twitter ,though can increase traffic to your site will not add to the Page rank of your site as all the links posted in twitter are by default "nofollow".

In one of the best seo forums a thread has been started titled "Is Twitter Useful for SEO?".The discussion on this topic has been going on for more than 6 months.In thethread,the comment posted on Jan 15 by Aaron Neal an informative one "I use Twitter to send out links that are about what my site offers, let say it volunteering. I send out links about volunteering and get lots of followers from retweets and twitter searches. I also put my own blog posts in tweets and drive the large amount of followers to my site. On top of that my profile obviously has my sites address and I also send out a Direct Message(DM) that invites new followers to read my blog."

For further reading:http://www.seorefugee.com/forums/seo-tactics/12572-twitter-useful-search-engine-optimization.html

To conclude,twitter if used in the appropriate manner can undoubtedly increase traffic to your website.