Use common sense to tell if it's old. Check POST DATES.
Ah, I'd make a mission where you had to go and steal a Spaz The Great Shrine before these other "people" stole it and shipped it across seas with cheap-ass shipment, and bad handling so they can sell it on EBay. Then you get blocked off and have to hang onto the ladder of a helicopter while holding this 50 pound shrine and gunning off enemies at the same time. Once the enemies are gone you have to climb into the helicopter for a bit of stunting. After realising barrel rolls are WAY harder on a helicopter than in an airplane, you wreck to the ground and break the shrine in the process. You now have 24 hours((minutes, game time, people, game time)) to gun off the people that found out you wrecked, drive in a high-speed chase, escape a herd of circus clowns, and fix the shrine.