For one, they have turned on Twitter OAuth. What does that mean? If you are logged in (via Tweetmeme), you will no longer be redirected to Twitter to retweet links from the Tweetmeme website - tweets are done automatically after you click the button. Even cooler, if you click the Tweetmeme button on blogs, like Mashable, it won't redirect you to Twitter.
Further, Tweetmeme has come a step closer to the functionality of Digg and Stumbleupon with the launch of the Tweetmeme bar, an iFrame that works similar to DiggBar. When you click on a link from Tweetmeme, an iFramed bar will appear at the top of the page while loading the link in the main content area. The bar itself provides an easy way to retweet and view random articles based on categories and topics.
According to Tweetmeme, the toolbar provides access to the over 200,000 links that Tweetmeme has captured from Twitter. Tweetmeme, very aware that some users are not fans of content framing, has provided an opt-out that appears after the first time you close the Tweetmeme bar (it asks whether you want to turn it off forever). Although this may not completely quell user complaints, it is a forward-thinking step towards giving the user a choice between toolbar and no toobar.
By creating its own bar, Tweetmeme keeps traffic on its website, increases usability, and inches closer into the social news realm currently dominated by Digg.
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