jrstark - 12:13 am on Aug 23, 2003 (gmt 0)

It's not an either/or with targetted vs. pubic service ads. It changes back and forth depending on the number of ads available.

You need to check back frequently to see if a page is always serving public service ads.

And when you do find pages that are always serving PSAs, try to figure out why. You might be able to make an easy change to get more targetted ads.