I spoke to Kay's partner of 19 years, Justin (stgpcm) at Kay's Memorial Picnic last weekend, and he agreed that it was a Thing that would be nice to do. We discussed the most appropriate location and settled on livejournal, as this is the site that Kay used and where he did a lot of writing.
I finally found some spoons, and the community is now up at remembering_kay and anyone who is interested is welcome to join.
I'm happy to do basic moderation/spam trapping, but I'd also like to give moderator access to people who were closer to him than I was. I'd also like for someone to design a more appropriate lj theme than the one that's currently up, even if it's only recolouring or wombatifying one of the existing themes. Any volunteers for this, please PM me through livejournal.
Currently it is a paid account for 2 months as I didn't think adverts would be appropriate. If you would like to extend the lifetime of the paid account and can afford to do so, then feel free to add some paid time, but this is not me begging for money. I'm sure enough people will be able to afford US $5 so that we don't have to worry about seeing adverts for a good long time :)