Jamie Gangel, a national correspondent at NBC, is working on a story about Twitter. She's asking politicians and other prominent folks about how and why they Twitter -- and is asking if Twitter has "jumped the shark."
I don't think Twitter has jumped the shark, but it seems to be continuing to gain members each day.
Aside from the fact that Twitter Inc. has not explained how it will generate money, I think the real question isn't whether Twitter is shark-jumping. It's does it continue to be a useful platform as millions flock to the site. At a certain point, you can't follow thousands of people -- but accumulating thousands of followers seems to be the game for many people.
I can see the value in having a large network, but when does the value chain break down?