Ever left an incriminating email on your computer screen by accident? Worried that snooping neighbors will take advantage of your forgetfulness? Artist Mark Daggett has created a screen saver that will make your skin crawl. Deskswap is a multi-user artwork that takes a snapshot of your computer desktop and swaps it with someone else also online at that moment. You don't know who's seeing your desktop, and they don't know you either. But you see every icon, folder and window running on their computer. Deskswap was launched yesterday and is already serving 300 users. Sign on, if you dare.