If you're looking for some decent ASCII based erotica on the Internet,
then this should be your first (and likely only) stop. Forget
trawling through banner advert or - even worse - pop-up advert
infested web sites. The main way to access the Alt Sex Stories Text
Repository is via FTP, although you can instead browse it via the
web if you prefer - with absolutely no adverts.
All the files are organised into neat little directories, either by
the name of the author or the collector of the stories. The main
collection, the archive of alt.sex.stories.moderated (spanning from
1997 to the present) can even be searched based on the story codes,
making it trivially easy to find stories that do have some elements
but don't have others.
Another thing that sets this site apart from the rest is the way you
log in. Anonymous FTP access is allowed, so you don't need to set
up an account. In fact, the only reason you would want to set up
an account with your own username is to upload your own stories, or
your collection of other people's stories (with the authors'
permissions, of course).
If you're a connoisseur of erotica, ASSTR is an invaluable resource.
If you write such stories, it's even more useful, providing you with
a popular server to pseudonymously publish your works on. Either
way, it's an indispensable site for anyone interested in the genre.