MetaFilter is a community weblog that anyone can contribute a link or comment to.
This site has been around forever. It gained popularity for a while when the Google search algorithm had it ranking highly for a lot of terms. That went away for some unknown reason with an algorithm update, but the site is still plugging along, its users cranking out quality posts every single day.
metafilter is not old web unfortunately. It used to be free, intelligent and fun, now it's just a neurotic censored mess, like most of the new web. It's an aging website. And it's bad. It is full of toxic dynamics, americanocentrism and ultimately, it is very boring.
It's both difficult to navigate AND an echo-chamber. It's useless.