The amount of complaining in lobby chat has gotten pretty ridiculous these last few days. There are some people who literally complain every time they play on certain maps or face certain builds. If something is bothering you so much come talk about it on the forums and please stop flooding the lobby.
Posting on the forums about people not posting on the forums seems... well, you decide for yourself. By the way, there may not be a friends list yet, but there's actually a block feature that's supposed to work.