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[Hide] (16.8KB, 480x360) There is a lot of history to 2channel, the Japanese megaBBS from 1999-2014. It now continues as 5ch and a broken copy version, neither of which capture the spirit of the old site.
Ayashii world(or strange world) preceded 2ch on the net, as a type of BBS with many instances. The original strange world lasted from about 1995-1996(maybe it was just 1996 I don't remember). They overall went out of style when 2channel came along.
That said, there is still a lifetime of threads, flash, and more from these that is worth reading and watching, as well as some instances that are still alive.
I recommend visiting the english renditions of these sites, they tend to be very easy on hardware because they are just textboards:
English 2channel, originally started by 2ch users in 2003: http://world2ch.net/
English Ayashii Warudo, started by enthusiasts of Japanese BBS: https://fukuoka.x10.bz/bbs.php