I'm giving serious thought to writing a distributed client that analyzes the lotteries around the world and trying to find the magic numbers from sophisticated measures.
That said, it is not possible unless there is some corruption in the randomness of the system, but as long as I have a good screen saver and some cool stats system on the website, then I am pretty sure people will still use it.
Better yet, I could then do what I really want with the client, and that is massively parallel market analysis.
And Code - the bandwidth on those things is pretty low - although I don't know about SETI, I think its sessions are pretty large, but they aren't sent out as frequently.
In the end, I run the distributed client on my work machine but not my laptop.
The Google Toolbar links into the protein folding effort I think... or maybe it is genome sequencing - either way, I turned it off since while those better science, they are really helping others profit greatly from the results and "all" they are doing is providing the framework of the clustering system while we do the work for no pay.
And by work, I mean have my computer on.