Facebook fails for business networking because it is facebook, people in general don't want to use their facebook profile as their professional profile. As for

Facebook fails for business networking because it is facebook, people in general don't want to use their facebook profile as their professional profile. As for the ad thing I think we're not quite on the same page, I'm talking about a system which gives publisher a bunch of ads which the publisher can then run as they see fit (presumably using their inside knowledge of their users).