I think people need to lighten up! Why can't someone just do one general post informing cachers if they wish to donate they can if not that is ok. That way cachers have a choice if they wish to read it or not and they have a choice to reply or not to reply. Just as long as it is posted once and not a spamming thing.
I don't believe it takes away the lightness and fun from geocaching at all. At least there are others out there trying to help others. I am a cacher that also fundraises for a charity. I think it's important to give to others and to try to make a difference. Especially in a world filled with negativity, crime, and hurt.
In today's economy it is hard to raise money and why not "network" as much as you can? Again, it is up to the cachers to either read it or not. If it is a matter of sticking to the rules and regulations than the whole sport of caching should be abolished since we all have grabbed caches in light posts in parking lots (which technically is private property), etc...
You can email me at firstname.lastname@example.org and I would be happy to send you a donation. I know how difficult it is to fundraise as I'm having trouble fundraising for diabetes. I look forward to your email. I would also buy a coin!