a) Way more reliable.
b) Also land on my phone [with vibration/sound alert]
c) I can put a lot more details in them since there is no 140 chars limit
d) Much easier to do: one line of code - old and simple tech from the 80s (sendmail) beats ugly kids of tomorrow (Twitter) any day of the week!
Mr. Schmidt was right. :-P
And this is coming from someone who has completely bought into the "OMGTWITTER" phenomenon. ;)
I think this approach is neat and novel, but ultimately I don't believe they've solved their problems.
YAPS/SMSClient with a good gateway SMS provider, if the SMS is that critical. I don't understand why email only is a failure, assuming they have push email to their phone (and if you don't, well why not?)