In Czech Republic pubs with tank beer are pretty common and popular. There in many pubs and restaurants the beer is not stored in mobile casks or kegs but in much larger stationary tanks.
Here is interesting article about tank beer in Prague.
It seems that in other countries tank beer is not popular so much. For example I have found some references from United Kingdom but there the tank beer seems to be used mainly on sport stadiums and other large facilities.
How is tank beer popular in other countries? Is not tank beer in pubs and restaurants only a Czech phenomenon?