"Microblog" is a word that almost nobody who actually has a Twitter account uses (and that's pretty much the only microblogging network we have links to anyway) - every artist I've seen calls it a social network and we get confused artists quite often because they want to select social network and microblog is forced on them (last example, http://musicbrainz.org/edit/23940587 )

So, I'd like to merge this into "social network" (like with Facebook) and get rid of the "microblog" relationship.