I'm not aware of any porn equivalent to this.
http://pearltrees.com
The gist of the place is that you save webpages like bookmarks, except that others can see these saves and even leave comments. You can perform searches or you can pick a bookmark and find related content.
There are other features for the free user and then even more features for premium users.
I bring it up because there is a simplicity in posting one link ( in a forum, on Facebook, etc. ) that leads to a bazillion more links that you want others to explore.
And you can see for yourself what types of sites the average person is bookmarking for themselves.
My signature is an example if you want to check it out without registering.
__________________
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Approach the mirrored reflection saying his name three times : "Butcher .... Butcher .... Butcher ....."
and wait to see if this Bogeyman urban legend manifests in the background, looming over shoulder
While your neighbors were busy killing off everyone in the neighborhood
with your own butcher knife in hand concealed behind your back
you stood for
ever before the window saying
nothing