So, I gave money to Wikipedia a few times years ago. I refuse to give them any money now, for all I care they can take on advertisers. It also strikes me that the Web Search engines that feature them so heavily could kick back a tiny amount to them for all the content they provide.
They sent me a begging email. I was in a nasty mood and said:
"No, not until you make some minimal effort to improve NPOV on the site."
I was surprised to see that they answered. It appears to me that this is an issue they hear a lot and have this email ready to go, it may have been automated.
Here it is: