Earlier quoted context omitted.
Let people pay $1/month to raise their limit to 280 characters per message. http://blog.zorinaq.com/revenue-idea-for-twitter-1-per-month... Imagine a heated discussion on Twitter... how many would pay $1/month to be able to communicate their points more clearly? Preemptive reply: no, nobody reads Twitter over SMS anymore.
> Preemptive reply: no, nobody reads Twitter over SMS anymore. I do, yet I still think this should be experimented with. If an account I follow tends to post longer messages, I can deal with seeing only the first line of them.
(Note: I'm not convinced long-tweets are "the killer idea" others seem to think - like someone else put it, the reader's attention is the limited resource, not the service's ability to publish characters. I don't scroll thru Wordpress/LiveJournal/LongReads on the train or while waiting for coffee...