TweetStalk is a Firefox add-on that you can use to stalk follow people on Twitter without them knowing that you are following their updates. Why would people want to do that? – I don’t know. For people who want to TweetStalk Twitterers, here it is.
Just install the add-on and you can begin stalking Twitterers. It will ask to confirm the Twitter account of the person that you about to TweetStalk. You can manage groups of stalkees and follow their Twitter feeds. It also provides you an RSS feed, so you can stalk them using your RSS aggregator.
TweetStalk’s Plans for the future:
We actually have a three phase roadmap for TweetStalk, but that may change with user feedback. I won’t tell you exactly what we plan, but it does involve better integration with the Twitter UI and creating other ways to make TweetStalk work (instead of having to use a Firefox addon). Other than that, we don’t have any plans to rule the world with this app. It’s just for fun. Enjoy!