I'd go for sharing thank you :)
I've learnt a lot from other people's blogs etc.
I try to give some of it back but am affraid i don't do so much exiting stuff :)
Kathy Sierra has a much longer post about whether you should share or guard your knowledge. In my opinion there is only one thing to do with knowledge and that is to share whatever you have, maybe somebody else can put it to better use than you can :)
http://headrush.typepad.com/creating_passionate_users/2006/06/mosh_pit_as_inn.html