Earlier quoted context omitted.
Tipping and basic etiquette (particularly involving dining) is one of the fundamental bits of culture everyone should research when traveling to another country. If you are in the US and received good service, but left crappy or zero tips then yes, you definitely leave a negative impression of yourself. Nobody will understand why you left a bad tip or just think "oh, he's a foreigner, he doesn't understand." They wil…
Tipping etiquette is far from basic and almost downright intimidating. Even when I thought I had tipping at restaurants under control, I then lived in fear of embarrassing myself not tipping people in hotels and I'd stayed in a dozen hotels before I suspected that the maid cleaning the room expected a tip! Once got caught without change in a bathroom in a club in Hollywood and was so embarrassed that I handed over $1…
Basically restaurants are the only place where tips are absolutely expected and you can make yourself look bad by not tipping. For anything else, if I'm not sure I usually just check a travel guide or go on forums and ask other people what they do.
I would do this if I travel to any country, just ask around at how you should behave if you want to fit in.