The online forum is also a hybrid between mechanical and digital mediums. Typography is mechanical and sequential/linear. But the internet is digital and simultaneous/mosaic. This causes a lot of problems for people that want things to stay linear or "on topic."
The typographic aspects of the forum demand "closure." An example is this thread about tilts and swings: http://forum.getdpi.com/forum/showthread.php?t=29495 The question asked by the OP had definitive answers, so it fit perfectly into the typographic medium. There was a clearly defined beginning (question) and closing (answers)....and everybody walked away happy lol
But general statements and aphorisms don't have definitive answers, so they belong to the mosaic/non-linear side of the digital internet forum. Conversations like the "The end of tolerances reached" can go on for as long as people want to continue them. In fact, this thread is a good example of what the future of internet discussion is going to look like. Linear threads that "stay on-topic" can easily be recalled through a search function, so over time there will be less of a need to create them.