Show me a paypal link, and you've immediately got at least $10 from me.
I don't think the "reputation" system is a good idea, primarily for reason's mentioned earlier. It's like the story of the widow's mite. A destitute woman gives all that she can, even though it is something seemingly insignificant, while a rich man gives lots, even though it is an insignificant percentage of his income. How do you say who gave more? The people who can only donate $1 but do so would deserve more reputation bars than the people who could donate $100 but only give $10.
Therefore, I think that anybody who donates should get a little badge in his information (maybe like the UFH badges?) that say "I donated to CD!" or something. Then clicking that would pop open the page to donate. No mention of how much, because that's no one's business but your own. Just acknowledgement that you did.
I think that would be much better.
Dave