It's funny how we all feel the same!
About the websites that were created around the release of Surfacing, there's also one thing we have to remember: the age of their webmasters. Those who were 25 at that time are 40 now, they work and many of them have kids.
I see it with my sister: she had her first job as a teacher this year and she is way more busy then when she was a student. When I do have a job and (I hope!) kids, I'm not sure I'll have the same amount of time to look for "Sarah stuff" on the web.
Besides my "regular" work (my thesis), I also have a website, not related to music, it's about a traditional canadian craftwork. I understand what you mean Ellen, because it costs me more than 100$/year just for the domain registration and the webhosting plan. The stats are quite low (between 1000-2000 pages viewed per month), but it's the only website like this in Canada, so the official tourist site of the government of Québec posted a link to it on its French and English Twitter accounts.
It's exactly what you describe: I do it because I like it, not to get any reward for it (though I was proud when I saw that the government official promoted it).
Do you know why I save every promo picture of Sarah I can find (and some live pics too, only the beautiful one)?
I imagine that in the future, in my future big house (ahah!), I'll have a room dedicated to music, with all my CDs, with confortable chairs where I will sit to read while I listen to music. There'll be posters on every wall of my big music room and Sarah will be the queen of it!

(Pffff... I'm sure I'll live in a tiny little appartment and all the promo pics of Sarah will remain in my computer

)!
By the way, Ellen, in the past, I saved almost all of the pictures that were in Witchy's galleries. I didn't keep everything: some live pictures or magazine scans were really bad and I deleted them. I kept all the promo pics, artworks, etc. If you want, when I'll have the time to do it (later in the year), I could make screencaps of my files and you could see if there are photos that you don't have. You could add them to the gallery.