Long story short, it's an ongoing webcomic where 20 different universes are brought together in a massive Tenkaichi Budokai style tournament. It's probably best described as a gigantic "What if?" comic that takes place 10 years after DBZ, and disregards GT canon.
The art style is quite something. The side-stories aren't as well drawn, but I dare you to tell me that this doesn't look ridiculously like Toriyama's drawing style. It's also in over 20 different languages, and YES Japanese is one of the languages you can pick if you wanna pretend you're reading Toriyama's work. The only difference is it's read left to right instead of original manga style.
If this thread ends up being a discussion thread for DBM, that'd be pretty sweet.