The AO3 non-native thing has been really noticeable to me because I've been on a dS kick for a while, and all the techniques that I normally use when I get obsessed with a fandom don't work with this one! You can't just go to AO3 and sort by date, say, because some authors put their stories in all at once after the fact, and some stories got brought in when AO3 rescued single-fandom archives. Sorting by kudos or comments or bookmarks is iffy because all of those vary so much by longevity. Things that I remember vividly turn out only to have existed on Livejournal, or on some writer's personal page, or even just in an email from a mailing list. It's like the lost library of Atlantis (the mythical island, not the Stargate series).

Also: waving madly at you! I think I recognize your default icon as Our Flag Means Death?