Make that two data points :) The site is unwelcoming, and doesn't tell me why I am there. The About page is a lot better, but doesn't tell me why I want to use

Make that two data points :) The site is unwelcoming, and doesn't tell me why I am there. The About page is a lot better, but doesn't tell me why I want to use Gravity and not go to pre-existing communities. If I want to talk to people about video games, for example, I could visit NeoGAF or the Penny Arcade forums and talk to them. If I want to talk about tech, I come to HN :) Why do I want to go to Gravity? Why do I want to go to it over Quora? (which, BTW, doesn't answer the pre-existing communities question either) The explore page reveals the functionality, but is overwhelming.