A small patch to bitcoin (0.9.x), to subscribe to bitundo, to subscribe to bitundo to get additional high value undo transactions. These transaction pay out via mining fees (and soon, for p2pool mining directly to you, not the pool!). This patch is thoroughly test, and if bitundo is down, or even being malicious the stability of your client will not be compromised. All pools and miners should make more money with this patch =)