Unlock company Cellfservices.com is giving away FREE unlock codes today until 11:59pm EST. All you have to do is send them a tweet, and they'll get back to you with an unlock code for your device. While I'm not sure they fully understand the "CrackBerry Effect" and most likely aren't prepared for the amount of tweets they will get from this post, they said they will get back to everyone that requests a code as soon as possible. Just send a tweet with your IMEI, device model and carrier (unfortunately this is only for AT&T, Rogers or T-Mobile customers) to @cellfservices in the format:
@cellfservices FREE BLACKBERRY UNLOCK CODES! IMEI: (15 digit imei no slashes no periods) Model: (ex. 8320) Carrier: (ex. Rogers)
If you aren't on these carriers, you can't still snag a great discount on unlock codes from Cellfservices. That have specials on CDMA codes going on right now.