With that said, I would recommend digArticle at www.dignuke.com for a blog / article / news publishing platform. Mike is doing a great job there and has already done quite a bit of AS integration.
Originally it was supposed to make ActiveForums blog theme a youple of years ago. But it is ok if no. I am ready to use third party modules if ActiveSocial won't support blog feature. I think they won't since they are the part of DNN Corp. now which has own quite poor blog module. It would be lovely to get some comments on blog feature from Will Morgenweck.
Cliff, why do you prefer digArticle over Sunblog?
And I want to correct my list of features for ActiveSocial in case there won't be Blog inside:
1) embed forum karma into Active Forums
2) embed possibility to add functions to ActiveSocial profile tabs and toolbar (so we can add blogs, video and etc. easily)
3) embed possiblity to hide links inside Active Forum posts for unauthorised users like it done in PHPBB, VBulletin etc. so it will improve forums' positions for crawlers