All I know is that a whole lot of our customers asked for it, so we built it. Took us a long time, but I'm very stoked for the response developers are giving us at Twiliocon.
My co-founder, hell bent on getting MMS as soon as possible lead the charge. We would meetings where I would repeatedly say "bullshit", and he'd say "no, really... it is the most fubar'd thing you've ever seen"
So a stoked response is an understatement, anyone that has looked into doing this knows you guys hit a homer and I'm looking forward to the wild ride of mobile comm and seeing how push, texting and all that play out. I think MMS available to developers en masse gives it a big push in the right direction and I'm beyond excited that our short codes are hosted with twilio!