I also have a huge list of all Tapas Bars in Madrid. It is so long I did not think it was a good idea to have them all in this session. If you need it, let me know and I will foward it to you.
It comes with metro stops, opinions and everything. I have a list also by areas of town. For example, if you go the Plaza Mayor, where to go first and what to order in each place. Very good indeed! This is FYI and let me know if you want it.
Mara