Google came out with this tool called the Ad Planner.

Looks like it was introduced in June of this year, but I just found out about it today.

From their website it says it is a free media planning tool that can help you identify websites your target customers are likely to visit. You can check out demographics and interests (kind of like Quantcast.com).

You can search for websites relevant to your target audience (which I'm playing around with for PPV urls). You can then create lists of websites where you'd like to advertise (for content network advertisers, but may prove helpful for PPV too).

You need a google account (which you can create for free).

The tool is here:
https://www.google.com/adplanner/

Help information is here:
http://www.google.com/support/adplanner/

-Aaron

Thanks Aaron. I was just looking into beefing up some campaigns. This looks really interesting, I will post back if I find some good URLs using this method.

Great find, I'm going to play around with this now.