Yeah, I just pulled out an old bill, it said through the end of 09.
Got on the online chat and the CSR told me it was expired, that I shouldn't get it any more (it's actually been 6 months, not 5). I copied the line off my bill and he told me that I still wasn't supposed to get it but for the inconvenience he'd give me it for 5 more months.
So in the long run I get two more months out of it, not bad.