Echo Bazaar is a browser based adventure/RPG, co-authored by a rather nice roleplaying gentlemen who occasionally used to put me up in Oxford when I was commuting from Cambridge to play the Society Game. It's rather fun Whimsical Victorian Lovecraftian RPGish type thing, that, as you can see, isn't terribly easy to describe.
Bizarrely, it uses Twitter for authentication, which means I'm now on Twitter as Sesquipedalitee (curse the scoundrel who stole *my* nick), although I'm unlikely to be posting any 140 character messages any time soon. My bowel movements aren't that interesting, I'm afraid.
If you're playing, leave a comment, so we can be nefarious and sinister together.