From FW:

Yesterday, I called Comcast to cancel my internet because I had just switched to Clear Wimax. Well, they immediately offered the $19.95/month for 12 months promotional rate that is usually only good for new customers.
I told them I'd think about it and cancelled the internet anyway.
Well, after using Wimax, I'm pretty impressed with their download speeds--I'm getting 9-11MB (I'm very close to a tower), but the upload speed is capped at 500kbps. This is a big negative because I use my slingbox regularly and need a faster up speed. Anywhoo, I called back today and the woman looked into the "campaign", as she called it, and sure enough, she put me on the discounted plan.
Anyone paying the $42.95/month, now is your chance to save some coin!