A friend of mine got a phone call from a company that is accepting sponsorships (ad purchasing :þ ) for a free language learning software program - where if you sponsor the software, you get an ad within the actual language lesson for the year (2008).
I thought I'd give it a try on some of my advertisers. If you contact them, they'll want to hear about the company being advertised since it must be one that conducts business internationally. They only accepted 2 of the companies I left on their voicemail, but it's only $100 per ad anywho...so I'll see what happens.
The cool thing is that the software will be free, so hopefully it will have a pretty decent distribution. And for $100 bucks...what the hey. I don't think they take sponsorships from the same company twice tho, so no worries about people stepping over your toes.
If you're using PPC, you might like the flat rate here. Just a note that it's first come, first served - so the sooner you sponsor, the closer to the beginning of a lesson your ad is placed.
Here's the info...
Cheers