This is an amazing example of the kinds of flexibility that is difficult or impossible to get with proprietary software. Miro, the free and open source media player, has released a Firefox plugin, which automatically inserts their affiliate code when you buy something from Amazon. It's really simple to use, and one doesn't have to have links on your website, etc. This seems like something many nonprofits might want to try out. Hat tip to Jon Stahl for the heads up.