Just out of curiosity, I clicked on the "Up for Archival" link this morning, something I seldom do. There is only one story currently listed, Deana John's "Castle in the Sand", which I have seen referenced here frequently. When I looked at it, I saw that the first chapter was posted in January of this year, and the concluding one just a few days ago.
So, what makes a relatively new, very popular, story eligible for archiving? BTW, I haven't read it yet, this is just me being a pest.