Blogger Comment Feeds
I don't think I'm the only person who finds it difficult to remember what blog posts they've commented on and fails to check back on the conversation, many blog applications let you subscribe to a feed of the comments, but not blogger. So a little while ago I wrote a script that will screen scrape and parse up the comments page, and give you an RSS feed. It's not perfect but it's worked ok so far, I use it on my blog here to offer a comment feed on each individual post. Thats great as long as everyone starts using it and I can subscribe to all the post comments I want, but not everyone does use it. So I also wrote a greasemonkey script that gives me a subscribe button on every blogger comments page. More info here.