Provided that I'm remembering correctly, it might be worth adding that MotK made two very significant contributions to the international Touhou community (aside from possibly being the only English site dedicated to Touhou at the time), in that projects started on those old forums gave rise to Touhou Wiki and the Pooshlmer image boards. One of them was a translated spellcard compendium for Touhou 6 through 8, complete with screenshots. It was started and maintained by Leviathean, I believe. The main site also had translations for those Touhou games, but aside from Touhou 6, they were pretty incomplete. Aona and a few others (?) started posting and translating the remaining scripts on the forums. Katchura might have stopped being active on the site by then, so its translations weren't kept up to date. But anyway, it was eventually decided to transfer the spellcard compendium and game translations to wiki format for ease of editing. The thing started to expand rapidly since then. I believe a member (J5983, I think), stepped up to create and host the wiki and the Pooshlmer image boards. If I had to place a date on all of this, it would probably be somewhere between late-2004 and early-mid 2005, but that seems a bit off to me for some reason.
Early patching efforts for Touhou 6 through 8 also began here, courtesy of game hacking by s", ssssz(?), and maybe a few others. These might have also contributed to the founding of the Touhou Wiki, but I'm less confident where that fits into the timeline. Early Touhou doujinshi scanlations also happened here before moving to Pooshlmer.
Prior to the hacking, the forums also decayed a bit because they were starting to become overrun with ad bots. If it weren't for the hacking these forums might have eventually faded away like the Eternal Romancia forums (if anyone remembers those; some old members also posted there).