Re: what powers this forum and wordpress?
Never use an alpha of any product for anything other than testing. Otherwise it’s 100% at your own risk.
bbPress 0.9 is very stable.
There are sometimes daily updates to 1.0 alpha (via the SVN of the trunk) but it will not be “finished” for many weeks.
Who is reviewing 1.0 alpha? You can’t review 1.0 alpha, it’s not finished. That’s like reviewing a car that has no interior.