I actually made the same comment in response to Marco: Facebook is not valueless. Neither is Tumblr, though. I don't know if it's "making a difference" in the s

I actually made the same comment in response to Marco: Facebook is not valueless. Neither is Tumblr, though. I don't know if it's "making a difference" in the sense of, say, social change, but it's providing the best product of its kind in the market. That has value to me. I don't use Twitter. I think it's stupid. But creating a vast opt-in, entirely-indexed community is something of value. The fact that companies can search to find real-time who's talking about them is big and will be leveraged more in the future, and the fact that its APIs let Tweets be used for nearly anything is big too. So it has value, even if it's value I will never need myself.