Do you tip cabdrivers?

I think it depends on a few things actually...if the driver is a so so driver (not too friendly or does things like taking the long way so your fare is more etc) they get my change and thats it..if they are REALLY rude I dont tip them at all BUT if they are nice, good with my kids etc I'll tip them a couple bucks...and have tipped as much as $10 at times LOL