well, I see it's a trend to create some kind of closed communites where people could share their games
so, why not?

http://steamcommunity.com/groups/deception_machines

here is the group itself

it's now open for everyone to join, but soon after I'll get enough members I'll set it into private again
not sure if my idea will work, but I'll try to do small regular keydrops

everybody can join it now, but soon after I'll close the group, only those who are Level 2+ Contributors can join, so don't lose your chance !