Most of those forums are now dead because of Reddit and FB.
Re: Facebook I agree it has hurt, nay scourged, the Web—that's undeniable—but that has also created room to innovate how we share content on the surface web.
I enjoyed YouTube until I tested the effectiveness of ContentID and was banned under their ToS. May they burn in hell under the new EU regs.
but isn't being monetized and sold for profit also market forces?