Comment Re:One question that we all want to know (Score 2) 125
It's not the technology upgrades which will engender longer tweets, it's profitability.
When the new subscription rate slows and Twitter decides that promotion/advertising revenue isn't enough, I expect the ability to tweet longer will be a "premium" (paid) enhancement. 140 char tweets stay free, but if you load up your account with Twitter credits ("Twedits"?), every block of 70 extra chars costs you x twedits...