Offer ends 8/31/2011, 11:59 PM, ET; valid for TrueBlue members in good standing who purchase a full fare JetBlue ticket and who check in via jetblue.com or mobile check-in (100 TrueBlue points), or at a JetBlue airport kiosk (50 TrueBlue points). Offer starts 6/10/2011.
It is not clear what they mean by "full fare" in this context.