so tell us about your results with this kind of training? has your bw gone up? can you lift heavier weights? has your biceps grown etc etc?
There are a few amazing points about this training:
1) it's fun to do. Basically, i just do several exercises without taking a break in between. When i have completed one cycle, i do another one until i feel exhausted. I change reps and weights around every two weeks, sometimes do super-slow, rest/pause etc, whatever comes to my mind.
2) i burn fat like never before training like this. The constant strain on your muscles, working out for 45-60 minutes without taking a break keeps your heartrate very high. Despite burning off a lot of fat (i can see that in the mirror

) my bodyweight has gone up, so i think that means i burn fat AND build muscle at the same time.
3) i trained DC before doing giant sets and had real problems in bringing my arms and shoulders up. Somehow (and please don't turn this into a discussion on how great DC is, natural al

) DC doesn't work for me. Now i train shoulders and arms each on their separate days and it works great for me.
4) strength: my strength has gone up a great deal since i do giant sets. Like i wrote before, i change reps, weights and training style every 2 weeks, the only thing i keep is doing giant sets, 8 to 10 exercises each workout.
5) i don't do cardio at all yet my endurance keeps getting better. I think this is due to working out without making breaks.
All in all, it's the most fun and interesting training style i have yet come across, if you want to say so. The key point in it is just: Don't do breaks between sets, do each muscle group on its own day and have a greater variety of exercises.