They give you $150 credit each month for 3 years upon signing up with bizspark with nothing to pay up front. Surely that justifies taking the time to check it out if you're already curious.
In terms of performance, it is pretty good for the price (free).
My only issue has been the down-time, Its actually been down more than my previous Linux host. I hope MS can figure out how to keep it online a bit more often :)
I will probably shake out an account and see what it's like for a cookie cutter user. I'm sure the experience is vastly different for a power user.