My husband & I are thinking about becoming members. I've been doing research on the net for pros & cons for the last couple days...stumbled across this site & saw the referral discount for $15. When I spoke to a representative today they asked if I knew any members & said if I do then I could get a $10 discount... so is the $15 promotion over now? I thought I read it expires on the 1/20???? Can anyone explain this? Everything else I've been reading has been great. I've yet to see anything negative... I keep looking for the catch.