I knew STI and ran an IRC network with him, Ferus, and kPa for several years before he created the Tinyboard imageboard software. While that software was in early alpha, 4chan removed /r9k/ and /new/, and STI created 4chon.net as a testbed for his software, and scooped up all of those users. His timing was perfect to capture a massive exodused userbase. I was a moderator there for a while too. I think he just did it for fun, and wasn't taking it too seriously. That's the kind of person he was. Sort of a mad genius type.
He once created an entire fake internet hosting company to troll one person he didn't like. Under a pseudonym, he deceived that guy into transferring all of their services to his "company", and then fucked around with them for over a month before they realized it. Every time the guy contacted the support livechat, it was STI by a different name, ready and waiting. He was responsible for quite a few other noteworthy and lulzworthy Internet events, including some fairly momentous ones, which I will not mention here. He was a strange but thoroughly entertaining character, and someone you wouldn't want as an enemy. I think he's settled down quite a bit these days though, and is a successful business-oriented person with a lingering crazy streak. I still talk to him once in a while.
The software this site and many others use is based on Tinyboard, the software he wrote. It isn't great software by any means, but back then it was the best around, and it started an imageboard renaissance. A good few developers were inspired to make their own, better software, and now there are several decent alternatives to choose from, unlike then.
The wikibooks link >>19040
posted is a fairly one-sided, though I suppose mostly accurate portrayal of how 4chon fell apart. Eventually STI stopped caring about it altogether and dumped it suddenly, redirecting 4chon to a joke site.