The evidence majin showed that he was being elaborately rused no longer exists, so it's really just speculation at this point as to what happened.
Regardless, his initial blog posts spawned a fringe community of Dragon Ball fans for nearly a decade to come. There were two types: those who started making fan art and fanfiction storylines for Dragon Ball AF in good fun, and those who were hungry after GT and desperately wanted to believe that AF was real.
Being really young and naive, I was of the latter camp.
With the advent of YouTube and other video hosting sites, people started making fanmade trailers, AMVs, and previews with MS Paint recolors of existing Z and GT footage, spanish dubbing, gratuitous use of Linkin Park tracks, and Prince Negaafellaga's Introduction.
And man, did I eat that shit up.
Dragon Ball AF Mugen
Back in 2007/2008, Ristar87 released a Dragon Ball AF MUGEN game with many characters including Super Saiyan 4 and 5 variants of the main cast, OC characters like Xicor and Evil Goku, and hypothetical fusions like Vegetunks and Brojak.
It was really exciting when it initially came out and the game seemed to be polished to my young eyes, but in retrospect, as with any MUGEN pack of the era, the characters are pretty broken and unbalanced.
For most people, that would probably be a negative, but it's such a charming kind of garbage. Me and Slime messed around with the game recently, and had alot of fun with it.
Playing MUGEN with an arcade stick is a such great time after being accustomed to playing the game with a keyboard or gummed up Logitech controller for so many years.
I've provided a link to the game below, definitely give it a try.