Probably the most bizarre (for lack of a better word) suggestion I get from readers or first time googlers for "how to make my site more interesting for GO riders" is to offer a "missed connections" feature.
That somehow I should play a cupid role, for passengers too nervous, shy, or unsure to approach other passengers about a date, or wanting to know what they were reading, wanting to offer advice for a family problem they overheard, or wanting to know where someone worked or went to school.
The only missed connection I'd be down for is WHO WAS THAT PERSON EATING A CAN OF TUNA FROM THE TIN ON A RUSH HOUR TRAIN?
I'd love to just sit down across from him, turn on the care bear stare and say, "Hi!", real loud, "HOW'S THE TUNA?! CAN I HAVE SOME?" And then pry open an emergency window and chuck it.