The power of relationships. :)
All social media, in my opinion, is about creating genuine relationships. I have learned that especially here in Hubpages. Without the "social" part, there is no real community, and no real progress.
In a very real way, you can't "get what you want" out of hubpages (high score, follow links, etc) unless you are actively building relationships.
I wrote a post about this a while ago: http://josephranseth.com/blog/41/the-power-of-soci...