Support Open Source Software

I guess most developers and corporations which in some way utilizes the java platform have used open source software in some way or manner (not speaking of operating system software here). There's a huge amount of free (as in beer) libraries at your disposal when using the java platform (even more than you asked for :-) ), so why not give a bit (or two) back to OSS community and participate in the development of one or more projects.. Its the participation age (so Schwartz says)..