Well, I was probably referring to Fanfiktion.de, because that's so far the only one I've posted on, but that's a German archive. For English fics I usually go to Fanfiction.net, which is technically multilingual, but English is by far the biggest percentage. Another site I know is ArchiveOfOurOwn.org, but I've only read a hand full of stories there. On Fanfiktion.de there are sections for fanfictions and originals respectively, but I don't actually know about the other sites. I only read fanfics or printed books in English, so I don't know whether they allow originals or not. I think Booksie.com is for originals, I stumbled across that one briefly. But I didn't stay long, so I couldn't tell you if it's any good.