for food: if the service sucks, it's taking too long, our waiter has been paying no attention to our table, etc... I'll just get the heck up and leave, even if we've ordered. I wont pay or tip for crap service (if there's no excuse). if it's a friday night or valentines and every tom dick and harry's at the restuarant and it loks like theres only one waiter I'll go the other way with it and be encouraging and tip well, if he/she is working their azz off.
I'm the same way with fishing gear... I dont do it a lot online but every time someone asks for opinions about stuff I own that I like I'll back it up. Islander, TFO, and St Croix are the best
cheers.