Tweet Blender is tag-aware and has support for multiple authors, lists, hashtags, and keywords all blended together. The plugin can show tweets from just one user or a list of users (as all other Twitter plugins do); however, it can also show tweets for a topic which you can define via Twitter hashtag or keyword. But there is more! It can also show tweets for multiple authors AND multiple lists AND multiple keywords AND multiple hashtags all blended together into a single stream.
Social Profiles is a Wordpress plugin which lets you add links to your commenters' social profiles. The links can be text links or graphical ones, but only registered users of your Wordpress site can input these, thus allowing these profiles to show in their comments on your blog posts.12 different social networks are included - Twitter, Digg, Delicious, StumbleUpon, being some.
Now using HTML-JavaScript Adder plugin you can add HTML and JavaScript to your wordpress sidebsr. The other important thing is you can do this without editing sidebar.php.This allows user to add embed ad codes from major advertisements sites including Google dsense, Adbrite,Bidvertiser and even you can add flash videos.
Tweet Tweet is a plugin for WordPress that will archive your tweets, and the tweets of everyone you follow, plus replies you receive from strangers, and direct messages too. All these tweets will be stored safely in your database.