- the establishment that I frequent (they remember)
- uber (they affect your rating)
- I knew for sure that it will give me extra service.
In most situation I didn't experience negative affect.
I suspect it is true since I never tip on Uber and I have a 4.96 out of 5 star rating.
They initially billed themselves as no tipping necessary. I refuse to subsidize driver wages on behalf of Uber. There is no way Uber is not benefitting from tipping by being able to keep wages lower as a result.