Well I bought one - I've been paying $10USD a month at DigitalOcean to run my mailserver, now I can run it for 1/4 that price for the same (well, slightly better) specs.
Will soak it for a month or so first of all, make sure mail from it isn't going to get blacklisted etc etc. But for the price it was hard to beat!
What do you use for your mail hosting? and does it have activesync capabilities? or is it a simple web interface type setup?