Happy anniversary, and thanks to lore and all the mods for keeping the community running!
Name: I'll answer to either Geri or Geri-chan.
How I found the community: I found some links to fics on the community through the snape_n_lupin Yahoo Group. There wasn't--and still isn't--much activity going on at the Yahoo Group, but there were tons of great fic on lupin_snape, so I came over to LJ (and now IJ).
Why I ship Snape/Lupin: See my Snapedom essay on the ship for the long answer:
The short version is that (1) the pairing intrigued me, since Snape and Lupin are both Dark creatures in a sense, and (2) the way Snape followed the Marauders around in school trying to find out Lupin's secret sounded to me like he had a teenage crush on Lupin, which I thought was rather sweet, but sad at the same time, since Sirius and James would never allow Lupin to get together with him.
Most memorable fic: Banished by zephyr_macabee; see my Snapedom rec for summary and links.
First post/reply: As I recall, I joined partly so I could reply to this post regarding Snupin songs. I often find inspiration for my fics in music, and I like to quote song lyrics in my fics, so it was a subject that caught my attention.