I'm looking for a list of websites with links to real estate agencies
around the world (any country is valid *except* the US/Canada- have
those already, thanks!).

Directories of real estate agencies or national associations of
agencies are probably the best sources, but I leave it to you to
figure out where else could be a good source.

Each website on the list should have links to at least a dozen
agencies; I'd like a list of 30 websites, covering at least 15
countries, and I will pay a bonus of $1 for each additional site up to
100 total.

looked like a pretty good answer to me given the question.
Have you had a lot of your questions answered to your satisfaction?

Just FYI, my original comment is now meaningless since it refers to
something which was pulled. Please ignore.

Have a look at http://www.torrevieja.uk.com a website that sells in Spain and Italy