Actually, we did not have to do much (indeed anything) to bring blogging to Orthopaedia. As you see, this is simply the NEWS section of the personal space.

It would be great if our community members take to blogging. I see two obstacles, both psychological: first, users are going to have to get used to the idea that their own personal pages cannot be edited by anyone else. That is, the blog entry looks like a wiki page, but it isn't. (Maybe we should change the layout for blog pages just to keep that distinction sharp.) The second obstacle is the reluctance to actually speak one's mind in a professional ambit where dissent has not been rewarded. (We could "correct" that problem by allowing anonymous sock puppet posting, but in that case the cure would be worse than the disease.)

Overall, these are not insurmountable obstacles; and the exchange of opinions can be a boon to writer and reader alike.