Poyozo gives you your own data back by downloading the information you're currently giving to the web on to your own computer. You can opt-in to importing your data from Facebook, Twitter, Foursquare, Last.fm, Google Calendar, any email service, any RSS feed, Flickr, Wesabe, Listit, Skydeck, Dopplr, your Firefox browsing history, the local weather, and your location, allowing you to access all of this personal data as easily as the companies that run these services can.
FlashTweet is a Twitter application that simplifies the process of acquiring more targeted followers. You can add multiple Twitter accounts to your profile, discover who you are following that is following you back, mass follow users based on search terms and location, unfollow multiple friends at once, schedule tweets in advance to run throughout the week, insert RSS feeds that will automatically tweet the title and link of your blog or another site.
Optimal renders valid OPML from any source in a tree-like view ideal for browsing. Links to external OPML files as well as RSS, RDF, and Atom feeds are expanded in place.Optimal can be installed as a WordPress plugin -- it is the successor to my OPML Renderer for WordPress plugin.
"Lucid is a free, open source web desktop, or webOS that lets you:
Access your media, office documents, and other files anywhere
Stay up to date with Twitter, RSS feeds, and what's happening on the web
Create great web applications in ridiculously short amounts of time"