Here's what I want in a search engine:

Charge me $15-25 dollars per year

Let me decide what demographic information I wish to share- make it easy for me to control and help me protect my information. Because you are charging me money you can afford it and I trust you.

Give me two search options: one, I'm only seeking information. two, I'm looking to buy. Do this for me as an advertiser: help me qualify the clicks I'm paying for

Perhaps allow me to pay per 1000 impressions (CPM) instead of per click.

By the way, I would also subscribe to a facebook that did this.