An update to my one of my previous post regarding What are Tapas?
I should clarify that there are three sizes of tapas: something that can fit in your mouth that more often than not comes with a toothpick stuck in it is called un pincho, una tapa would usually be served on a small plate (saucer) or dish and una racion on a large plate with enough to share around.
I hope the above helps to clarify any misconceptions you had about tapas? If any one has anything to add please feel free to drop me a line. One thing is for certain though. Tapas are anything and everything!