I think social media services can grow extremely large, but monetizing turns people off. Facebook is tricky, because the data you post there is available foreve

I think social media services can grow extremely large, but monetizing turns people off. Facebook is tricky, because the data you post there is available forever, I fully expect to use facebook 30 years from now to look at my kid's pictures (that I take and post now). This is very different from a blurt on twitter or a video designed to disappear in seconds. I can't imagine these services being worth as much as facebook, and I don't know what they're thinking turning that amount down. They have no revenue.