Platform for discussion not centred around the sharing of links

~talk seems to fit this criteria, but as I browse Tildes to my dismay the majority of content is re-posts of links from external sources. Obviously, there are also quite a few posts which are more than simply URL pastes, and even in the comments of a URL post, there can be healthy discourse happening.

But I am interested to discover whether anyone here knows of any other platforms that are entirely dedicated to written discussion and communication, where external links do not play a big part in that ecosystem of discourse.