once an entrepreneur invented a fake bank machine and put it in malls. Everyone tried to take out money using their cards and pin number only to get "this machine has insufficient funds" as a message. the special made machine then collect both the card and pin number info and the "entrepreneurs/thieves" then made new cards and withdrew millions before they were stopped. (they took their show on the road across America)
For some reason this site reminds me of that story.
i have no idea if it would be even possible as i am "Tech-Net challenged", but seems like sending some random site your passwords from your IP address may be not in your best interest....
then again, my password has always been 654321