Projects die without dedicated people to manage them and having funding for an FOSS project allows for those dedicated people to spend more time devoted to the project itself (instead of working that silly "day job"). If you have been by my blog before then you know I write about Wine software every so often and on a few specific occasions about Bordeaux, a commercial Wine product.
Now through October 3rd, 2011 Bordeaux is running a special donation promotion to help out a couple of important open source projects. The first of these is the annual Wineconf, that is to be held in Paris, France this year. The second is FreeBSDNews.net, a good news source for what is going on in the BSD community. The third and final project is the FreeBSD foundation itself, which is a non-profit organization.
As long as the donation sale is going on 50% of the cost of Bordeaux, which is only $25.00 at most, will be donated to one of these projects. Linux and Open Solaris copies sold will donate to the Wineconf and Mac, FreeBSD, and PC-BSD sales will be donated to the BSD projects listed above. Bordeaux is also the only commercial Wine solution to offer support and "official" builds for the BSD and Open Solaris platforms.
If you are unsure what Bordeaux is/if it is right for you be sure to check out my hands on review of Bordeaux 2.0.4 If you already have already purchased Bordeaux (or another commercial Wine software) then remember - you can always just donate right to one of the above project anyways.