Contextual advertising system.
Don't know. I guess the same ones who would sign up for Quigo or Kanoodle or TCLA or any of the other ones. To try something different maybe? I don't think there is a minimum like the search requirements.
I doubt that FindWhat could offer a higher cpc but if anyone can offer a higher cpm through a better system than why not? People do get stuck on cpc rather than what really counts though since it's the only thing most people talk about.
I mentioned FindWhat because if they have a relationship with Verizon and a contextual advertising system in place then it would make sense for them to offer it. I don't know if they will but I think it would be good. You mentioned Quigo as maybe doing it so it got me thinking why wouldn't FindWhat just do it and not use a middleman.