The listing, Invite to FREE steam keys site has ended.
Invitation to gameminer.net (gameminer.ru) - the web site where you can get lots of steam keys and gifts absolutely for FREE!
But unlike other giveaway sites, this one will not let you sign up with the steam account you have unless you also have an invitation code.
I won six games there, which include such titles as Serious Sam Complete pack ($94.99), Tomb Raider ($49.99), and other - all for FREE.
The winner will be given the invitation code with the instructions on how to access the site.