In order for Twitter to start a subscription model, they'd need international SMS (something they seem to have given up on, as third parties now provide paid SMS bundling) AND IM.
Today, I opened my T-Mo statement, and there was a Twitter ad inside. Still no IM and SMS, though. No matter how big their user base gets, that looks like a show stopper to me.
Today, I opened my T-Mo statement, and there was a Twitter ad inside. Still no IM and SMS, though. No matter how big their user base gets, that looks like a show stopper to me.