Tipping Etiquette

How much should you leave as a tip when you dine out?  Everyone's opinion is different when it comes to this.  I'll let you know out right that my opinion is biased because of the fact that I am a waitress.  I know plenty of people however that don't waitress and feel the same as I do.  Here is a breakdown of how you should tip your server. 

It's really quite simple, good service deserves at least 20%, if you were really impressed go up from there.  An easy way to find %20 is to first find %10 and double that.  For example if your bill is $30.00, ten percent is $3.00.  So, a $6.00 tip would be acceptable.  

A lot of people find that %15 is good enough, but if the service was outstanding or even just decent...it is NOT acceptable.  

%10 is NEVER acceptable.  If your reaction was, "Well I never tip %10." that's great, but you would be surprised the amount of people that I've served that have given me ten percent tip after they told me that I did a good job.  This left me confused and frustrated.  The only time ten percent is okay is if you're in Canada.  This is only because servers in our neighboring country make minimum wage...not $3.75 an hour.