Just as the most interesting sessions at Davos are the ones you know the least about beforehand, the most interesting people tend to turn out to be the ones you've never heard of. If you do happen to find yourself talking to Bill Clinton or Bono or Dmitry Medvedev, you'll probably be part of a large crowd of people and the conversation is likely to be superficial at best. On the other hand, if you just sit down on a random couch in the Congress Center, there's a really good chance that sitting next to you will be a fascinating and very useful person to know.
And of all the attendees at Davos, the very best to get to know are often the spouses. There's a smattering of Davos Deville types, of course, swanning down the Promenade in their fur coats, but many of the spouses are very smart, very engaged, very interesting in their own right -- and tend to feel a bit left out, given the rigid Davos class system. Log in to the exclusive in-house social network, for instance, and they don't even turn up.
Many Davos spouses have been going for years, and know the ways of the town and the conference very well. They also tend to be able to keep things in perspective, and realize when it makes sense to blow off a session on the state of global manufacturing to enjoy the blessedly empty slopes.