I like European bitches
Reading the link from OP and several posts in this thread I think the most hilarious think is how misinformed everyone from outside the US is about how the US works. Most people dont realize that almost every state is as big or bigger than their own home country (which is why we have a federation to begin with) so they dont realize their assumptions about the entire US based off of one or two places they've been are wrong.
Numbers no
Actually, this is worth mentioning - thanks to the US tourist market many restaurants in the UK and Australia have started adding a 15% "optional service charge" to the bill. If the food and service were good I'll pay it, if not, or if I'm skint, I won't.
If they do a damn good job you sometimes tip them. There's no obligation to do it and they make at least minimum wage so if they don't go out of their way and stand out nobody tips. It's their employees job to pay em, not mine. Fuck 'em. Also I dunno how they do "tips" in America but here it's pretty common for places to pool together their tips and share it out between the staff, so there's even less of an obligation for waiters and waitresses to be exemplary whilst the other half of the staff half-arse it.
I went to a huge buffet (they called it a smorgasboard, even) in Amish country last month, and there was a sign that said No Tipping on it. I was amazed that they'd do that.
I've only been to one place and seen that optional service charge on the bill. It's a self-service all you can eat buffet place so it's kind of silly lol. Sometimes will pay it if they're actually good at cleaning up our plates (you get a fresh one each time most of the time) and quick to offer more drinks but half the time they're super busy and give us no service so they don't get shit. Find that half the time I'm on my third or fourth plate and my previous ones are still there taking up space at the table.