Since you said that we can post our own things and I want this place to be more active... what has Nerdfighteria led you to? This can be other YouTubers, fandoms, hobbies, etc. Maybe we can tell each other about things the other hasn't found yet!
My favorite things are 5AGirls, Wheezywaiter (is friggen hilarious and if you haven't seen his stuff yet you should go check it out), Nerdfighteria turned me onto all sorts of books (John Green books and The Hunger Games, especially), Wrock, Lost, The Oceanic Six, Doctor Who, and Chameleon Circuit. It has definitely turned me into a bigger nerd.