Ladders are not pyramids, a pyramid is 1-2-3-2-1, a ladder is 1-2-3, resting for a minute and starting over at the bottom. Ladders are good for doing a lot of pullups without burning out and generally keep fatigue away better than a pyramid. I did ladders after comming back from a lot of time off, my max set had fallen down but I gained about three reps back.
I'm not sure how a ladder would work for mass, but if lots and lots of pullups is your goal, then ladders will work.
There are a lot of articles on the web about Pavel and ladders, google/dragondoor is about all you need to know on the subject.
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You beat me too it, that is what I get for watching youtube.
Look up the competitive ladder, you basically do one rep and rest only the amount of time it would take for your partner to do the same rep, you can compete against yourself too.
<message edited by thunderblood on Wednesday, June 17, 2009 5:19 PM>