GROWING POTATOES IN A MOUND

Hi

I've read somewhere about growing spuds in a mound, rather than rows. 

Has anyone ever done it?  If so, how do you do it and do you still have to earth them up?  I've never grown potatoes (being new to this stuff), but I'd like to give this a try because my plot's quite small and I think it'd take less space.

I've read about it mounds
But never seen it done   

Or do you mean lazybed ridges like the old timers used to do?
lazybeds