From what I understand this promo has been going on for a while, but I just came across it this morning. Verizon is offering one month free of their Mobile Broadband Connect serivce to customers until September 30th. This is a great chance to check out all of their tethering features if you've been on the fence about signing up for a full plan. I couldn't find any way to get in on it, but I suppose calling customer service will get you started. Just be sure you cancel before the end of the promo period or you'll end up getting rolled into a full plan.