Vote with your wallet and otherwise don't just flap your lips.
I sincerely hope that wasn't actually addressed to me. I can do much more for open software through contributing to open projects than I would ever be able to by dumping what little money I have into a megacorporation's coffers.

Aside from that, voting with one's wallet won't matter when you only have DRM products on the shelf to choose from, thanks to nutty pro-business legislation. I'd rather vote at the poll booths, thank you very much.