Twitter vs. T-Mobile — the 100-word version
From the Twitter company blog:
We believe it to be a technical issue happening between T-Mobile and the folks who help run our text messaging. We do not believe it to be a policy issue. We've received word this issue has been resolved. We're still hearing reports of "service unavailable" messages for some folks. We're staying on top of this, and will report back when it's fully fixed.