Most hosting companies will give you some sort of tracking package with your account. That's really the best way to go.
As far as revenue goes, I like to get creative here. You can land on a search page, but it's more fun to redirect to an affiliate program. My TheBadGuys.com domain, for example, links to those US Army top 55 most wanted Iragi playing cards (25% commission). YoungIndianaJones.com has a popup for Amazon shopping that contains an embedded search for YIJ videos (15% commission). ...stuff like that.
I'd take it one domain at a time. If the traffic is high enough, it might even pay to set up a little online store (using Amazon Stores or CafePress or something) and use Overture to drive clicks. That's what I'm doing with Camping Depot (not live yet) and UtahBikiniTeam.com.
Good luck.