I've been a server lots of times and know how frustrating it is to put in so much work and not get tipped well, so I almost always tip 20% as well. I go down to 18% if it was alright & 15% if it sucked. If the server was rude to me they will be lucky if I leave $1.
I always feel uncomfortable leaving less than $2 though even if my bill isn't much.
Threaded Mode
