I'd rather google patent them than some other sue-happy company who will abuse them. Who knows, maybe they will open source the patent.
FTFY
If you patent the core idea, the other patents become a lot less useful. (Not that I think Google is thinking this way. It's just a PR problem to them. When no one is looking, I bet they do whatever they can to get as much money/power as they can.)
http://arstechnica.com/business/2007/03/analysis-microsofts-...