what do you do when you cant remember the name of a site, or what the site is about?

i was on 4chan like months ago and i saw an ad for this forum of some sorts, it seemed ok but then i forgot what it was completely. something to do with waifus or hentai or some shit like that? it had an odd name i'm pretty sure.

it was a forum 4chan-ish type site. but it wasnt in a futaba style, it was more like.....just a regular forum
it was black and it had something to do with anime or something of the sorts.

if you know this, id appreciate it. sorry if this isnt nearly enough detail.