Further to my discussion of my Google Adsense problems, I researched some of the alternatives that Shawn suggested. I wasn’t comfortable with any of them, other than Yahoo! Publisher Network. I applied, and have just now received my notification that I’ve been accepted. Unfortunately, the program is only open to US-based publishers:
Please note that during the beta period, Yahoo! is only able to serve or accept U.S.-based publishers with a valid Social Security or Tax ID number, and with web site content that is predominantly in English and targeted at a U.S. user base.
I guess I have to wait until it comes out of beta, or at least until they expand the beta program.