How you found the community or the earliest community experience you can remember: I can't remember how I found the community exactly, although I was a shipper, so I'm sure I deliberately looked for it, probably through a search or looking to see what communities other RL/SS shippers were members of.
Why you ship Snape/Lupin: When I first joined the HP fandom in August/September, 2001, I poked around Yahoo mailing lists and found the snapeslash and hpslash lists, and then I poked around the links section for both mailing lists to find archives. I read a lot of different stories to see what sparked for me. I was still new to slash, having only read/written it less than a year although I'd been writing fanfiction for years prior; I knew I liked both Snape and Lupin in canon, but it took stumbling across The Parapet for me to find what I'd been looking for. Once I started reading RL/SS stories, something just clicked for me, and I knew this dynamic was it. I started writing Wicked Game I by early October, 2001 (I'm one of the pairing geezers, apparently *g*), and years later, RL/SS is still my OTP. My full RL/SS history is here; a longer version of why the characters and their dynamic appeals to me is here.
Most memorable fic you've read in the last month: Eek, that's tough because I've been really busy in RL and sort of on hiatus in fandom, so I haven't been reading/viewing much of anything. I've been keeping up with The High Cost of Living by werewolf_lib when I can, though.