Normally the webmaster/mistress and the character(s) would respond in humorous fashion and it was just fun! I guess it actually could be achieved with "fake" letters you think they would get from fans or a fanclub :).
Here are some other things I remember liking:
- Quizzes (How Well Do You Know...?, Which "x" are you?, etc.)
- e-Cards tailored by the webmaster/mistress
- Character birthday events
- SPLASH PAGES (although they are making a small comeback)
- I miss Pocket Bishounen
Also, this isn't really relevant to old shrines, but I'd love to see a webmaster/mistress do a themed icon challenge like you would have found on livejournal back in the day. Not even 100 icon themed challenges, just like 10 that really resonate with what they are shrining.
I miss Winamp Skins because I still use Winamp LOL I do have some really pretty ones, though <3333Winamp Skins
The reason I don't really make these is because of so many multiple screen resolutions. But, with the addition of smartphones, you could try making smartphone backgrounds~~~Wallpapers
---------
Honestly, I miss A LOT of 90-00s elements for all of the interactivity and fun. But, there are things you can add to your subject to add a little more.
edit:
This might not be doable for everyone, but I really had a fun time doing this page! (:
And also, I follow a few "incorrect quotes" blogs on tumblrs for anime series I love and I think that would also be fun ~ (quotes that the character(s) TOTALLY did not say, but sounds like something they might say)
edit:
ALSOALSO, something that drives me absolutely insane: you can't view the Anime Web Turnpike's (Anipike) link directory in the Wayback. If there is one truly Retro thing I miss it is this source and I know there are more things to add to this list andandandand it may be impossible ;;