Well, the end is definitely near. Thanks to the efforts of a dedicated group of ingenious test subjects, we've located enough potatoes to generate the required power to start the GLaDOS reboot process. It's not too late to participate, though. The more CPU power dedicated to the process, the faster it will finish. What does that mean? From now until release, play any or all of the Potato Sack games to expedite the launch of Portal 2. Your efforts will be tracked on the official GLaDOS@home page.
The Potato Sack games are all great, and each one has also received a massive Portal-themed update. So why not get a taste of Portal 2 now while you help launch it?
There's also still time to collect all 36 potatoes. Anyone accomplishing this feat by the time Portal 2 launches will receive a very special, non-hat-based reward.