Security on the friends and family deal got beefed up because some jerk was selling the information, and "discounted" equipment, on EBAY.
However, it is still around. You need the email of someone at XM to approve the deal. It's good until the end of the month and is good for an activated SkyFI plus an adapter kit of your choice for $99, only catch is you agree to a 6 month subscription. It's kind of like getting the 6 months for free, considering that's about the cost of an adapter. That offer expires at the end of this month, which leads me to believe that it might improve. However, if you are driving to work 1 hr. each way every day, I wouldn't wait. It is impossible to accurately describe how good the service is.