They don't show up in the steam group thing ingame, and when I try to connect manually I get: "
Invalid protocol, expecting 2033, got 2031
BinkOpen( c:\program files\steam\steamapps\common\left 4 dead 2\left4dead2\media\l4d2_background05.bik )"
Been that way for a while now. Using an uncensored version of the game if that helps.