Considering what Twitter did to Tweetdeck, I’m not hopeful for the future of Posterous as we know it. The timing sucks, too. I was considering dropping my web host completely and moving everything to Posterous. Instead, I’ll be looking for different options.
It’s too bad–Posterous was/is a great service. There is, of course, a slim chance that Twitter won’t eff it up, but I’m not counting on it.