Are you familiar with Reddit? Pretty much everything within their comments is spot on; i.e. upvote/downvote, most popular comments rise, save and share features, etc.
The less a user has to scroll to read the next comment within a thread the better.
I've always been a fan of Euro TS and when this came out it was a must have. I've really enjoyed growing into the simulation hobby ever since I was young (late 20's now). When I first started to experiment with wheels, pedals and joysticks everything changed.