Yeah, there are actually two versions of 1.1. The first one had the whole wgetted directory structure in from my server. I fixed my extension-building script and uploaded a new version 1.1. I didn't think it was worth changing the version number since very few people had downloaded the old one.
I'm not sure there's a post about this somewhere. Vanilla Search + Feeds are a very useful combination, you can do that for virtually any content in the forum. You can track any user's posts, all you need to do is typing his name followed by ":"