I just sent an updated version of Lobster - my RSS feed reader to all CaRP users. This revision adds Twitter support -- tweet directly from your feed reader.
Lobster automatically generates tweet text from the title and link from each RSS item. Edit it as desired, select which of your Twitter accounts to post it to (up to 3 at a time), click a button, and you're done. No need to copy and paste URLs or headlines into a Twitter app or Twitter.com.
It also supports URL shortening to help you save space. One click shortens all the URLs in the tweet.
If you're following me on Twitter, expect to hear about more of the useful information I come across, now that tweeting about it won't be so cumbersome anymore.