How do you tip a waiter?

I am a server myself and as a general rule never tip less than two dollars even if dining alone. Tip according to the service you receive but base it on a two dollar minimum, and always at least 15 percent. Of course tipping more than 15 percent is always welcomed. Service above and beyond Excellent should always be rewarded. Servers are taxed based on sales and whether you tip or not, they are still getting taxed as if you did leave a tip. Unless the server is outright rude to you leave at least 10 percent, even if the service was slow. They are still being taxed.