I'm on another board that is similar to this (same software) and they use the blogs. I don't recommend them. On the other board, people tend to start drifting to the blogs in cliques, hanging out there only and ignoring the public section of the board (blogs can be private, friends only, or public) and lots of complaining, snarking at other members, and other negativity tends to happen. They had to recently slap some hands and remind them that blogs aren't a free-for-all to gather in cliques and make fun of other members or drag the atmosphere down in a negative mood. This other site also uses massive amounts of bandwidth, and tends to go down a lot.

I don't recommend blogs here. It sounds like a fun idea in theory, but I think it would be more trouble than it's worth.