The worst are the ones that take a different tack. They try to throw a guilt trip on you and talk about contacting you repeatedly and you have failed to support them.
The biggest problem I have is identifying who is actually going to get the money. I figure if I like a particular candidate, I will go directly to that candidates web page. I don't want to go through 3rd parties.
I think I at least get a little less snail mail....maybe.