I'm going to put up 10 BTC for someone to fix the formerly working wp-e-commerce plugin. It fails to work with the current version of wordpress and the current version of the wp-e-commerce package.
I would assume that anyone willing to contribute to this bounty would say so here.
I will transfer 10 BTC to the first "someone" who can successfully release the source code for a wp-e-commerce BitCoin plugin with the working feature list of the original.