Richard Eriksson was inspired to set up a microblog on his site. There are others like this: adactio.com and kartikprabhu.com are two good examples: their authors publish to their own sites, which then re-post to Twitter and/or Facebook, and using web mentions they can track replies and likes from Twitter/FB or directly from other sites.
Here's an example of a microblogging conversation being carried out directly between two blogs.