Does anyone know, if possible, if there is some sort of playlist where I can play on maps I downloaded from the “most downloaded/most recommended” list? 'Cause I downloaded a few and would like to play them with other players, not just just locally. Thanks! 
Invite people to your party and play in your custom games lobby via the interwebs!
Although I wish there was a custom content playlist in matchmaking…
Dang. 