Search is perhaps the most widely discussed Twitter feature. The problem has been that most users have to, well, search for it because it isn't available from their home page. Twitter has been slowly rolling out integrated search and yesterday they provided a significant update. While the change to their interface seems modest the implications could be big according to the WSJ's Digits blog which saw great potential in the new home page as a dashboard for real time search. Twitterrati, a blog that has criticized Twitter for lack of innovation praised the changes and saw an opportunity for Twitter to reclaim some traffic from 3rd party apps such as Tweetdeck and Twhirl.

Twitter plans a feature rich search function and has in fact named it a 'discovery engine' as differentiation. The challenges presented by an open API continue to be as strong as ever. This week Yahoo launched Sideline, a real time Twitter search client described as slick by Techcrunch but its value was questioned by TC and other bloggers including ReadWriteWeb.

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