I'm kinda ambivalent on this one.
On the one (1) hand, blog comments can engender some pretty lively conversations, trolls aside
. On the other hand, would blog comments detract from the forum topics
Right now, I can search the forum topics, albeit in mine own clumsy fashion, and be reasonably certain I've covered whatever 'twas I sought. If comments are enabled, now I have to search the blog articles, as well, and try to merge those results with the forum results. Keeping the timeline accurate could be somewhat difficult - read nightmare - to accomplish
I guess I'd say, "No," to blog comments unless some methodology exists to merge them into forum conversations.
(Granted, I'm thinking of a DC blog, not blogs in general, but from what I've seen - in my own blog, as well as others - some degree of fragmentation and focus attenuation tends to occur, with comment references to other blog posts that are not directly quoted. This dilution seems to happen to a lesser degree in forae. (Well-l-l, depending upon how much I've had to drink