Gen. Wesley Clark is running a nice stunt in which he'll go and spend a day doing community service in a district where a progressive democrat is running. The stunt part is that where he goes will be chosen on the basis of an online vote (aka email address harvesting operation).
But if you're willing to give up your email address to what will undoubtedly be a polititcal ad blasting operation, why not go over to Serve with the General – Pick a District and vote for FL-18 [Annette Taddeo] or FL-25 [Joe Garcia].