Aaaand… we’re back.
So, as you all noticed, the site went down this weekend. It wasn't as, shall we say, planned as we'd like. But something positive came from it. We've merged SharePoint University and SharePoint Blogs! While the forum posts (unfortunately) got new URLs, the blogs stayed the same. Besides, search will help with the forums. 
We did have to flush out the "tags" that were used to tag posts -- they were causing some unusual performance problems. You should be fine with creating tags for new posts.
Coming in a few days, we'll "turn on" blogs for all existing account holders. No more waiting for a blog -- you'll just get one. New signups will also get one, automatically. I'll make a blog post here when that's ready to rock (later this week). There are a few known issues, mostly related to post counts, that will work themselves out in the next few days.
Thanks for your patience, and if you experience any issues, please post them to the Feature Requests / Problem Reports forum!
Enjoy the new SharePoint Blogs / SharePoint University!
dustin