So this is fresh news to me; Cliffski, the guy behind Gratuitous space battles, just posted some very intriguing stuff.
He's got a site, show me the games, up for some odd amount of time where he and other indies have put up their games. Apparently; they're sharing webspace and advertising to try and pool sales via returning customers. In short; it's a shared sales personality that they can advertise as one unit.
Note they've got Defcon in there. Defcon pulls a lot of hits. Mr. Robot, not so much (still a good game, that's for another post.) But since htey're both together, they're essentially advertising for and supporting each other.
Very novel, very neat and very amazing that he actually got it to work out. Indies aren't the best at co-operating, there's a reason they get GOTY awards yet somehow don't work for big studios, and it isn't just for their health, either.