My Tweetopics is a free service that lets you discover the topics you tweet about based on your #tags and share them. That about sums up what they have as a description on their homepage. You log in via oAuth to utilize the service itself.
Any topic of your tweet that you include a hashtag will allow you to create a channel on the site as well as provide embed code for your blog. When you first log in it gives you a URL of your channel as well as tries to follow them on Twitter and send a tweet you are using the service. Kudos to them for allowing you to skip that if you desire, including following them. I appreciate them letting me work with the site before following them.
I went ahead and skipped and my Twitter stream came up with how long ago I sent that tweet, the ability to favorite, post a comment email or retweet it also. I imagine had I picked a hashtag it wold have rebuilt the channel. You can see mine right here.
You can see the latest topics and tweets from some tabs above the channel as well as your recent topics on the right panel. The embed code was a tiny button that provided a pop-up with the required script. It did not look like you could change the size or colors of the embedding yet.
This site comes from Arktan which has channels around all of the social sites I found by clicking around the About and Help pages. So there is a background in this ability with the developers and it was nice to see them specialize in Twitter.