I think we have a fascinating new and quite dominant input into politics - and it wont go away. From time to time, people articulate a view that we should ban opinion polls, but that's nonsense.
What's an expert? I read somewhere, that the more a man knows, the more he knows, he doesn't know. So I suppose one definition of an expert would be someone who doesn't admit out loud that he knows enough about a subject to know he doesn't really know how much.