Blerp, a new property of the RocketOn folks, is a new social network with a twist. RocketOn, like Weblin, is a plugin that lets you layer stuff on top of the web. It was for avatars and MMOs, but now it’s been repurposed as a way to annotate the web. You get a frame around your browser that lets you drop text, pictures, and so on on various webpages. People you are linked to get to see the annotations, and you can slurp your networks from Facebook, twitter, etc. Blerp’s just opened its alpha, so check it out here.
Minsh is a little different; it adds a virtual worldish layer to Twitter by representing the people you follow as fish. They use little chat bubbles to tweet, and you can click directly on them to reply. I suspect that using this tool will drive users further towards synchronous use of Twitter… It’s in closed alpha, but here’s a video: