I ignore the tip jars, and think they're silly.

On the otherhand, think of it this way. Say you pay $2.85 at Dunkin Donuts driveup and give the cashier $3. then you drive off.

You can be sure that Dunkin Donuts wouldn't want people making the change in the register, and then sliding the 15 cents into their pockets. That's a formula for inconsistencies in the cash draw.

So they put the jar out, tell the clerks that everyone will share and that's what starts it. Once the cashiers get a part of a little pot, they want part of a bigger pot. Only human nature.

But I still don't tip. If I did, I'd need to tip the guy who offloads the supplies from the truck, and everyone else who had a hand in delivering me my morning coffee.

And speaking of morning coffee, our local Dunkin Donuts hasn't served coffee for a week, as our town has had an e-coli alert in the drinking water. I've had to get creative about coffee, and it's KILLLLLING MEEEEEEEeeee. (thank you.)
Rita