Dreamt I'd dropped in on my school chemistry teacher (who wasn't the one I had) to say I still remembered an experiment we'd done with a very mild acid the name of which I knew at the start of the dream but couldn't recall when telling him about it. He couldn't remember either.

Then I went into another room, where there were lots of friendly people, several of whom knew me. I didn't recognise any of them until they said who they were, and it turned out they were from Twitter. I now recognised them but didn't know their names, which I'd only half heard.

Someone said "you'd better ask Mols" about something, and I was surprised because the only Mols I could think of was @mholzschlag and I'd thought they were all local UK tweeters. Also I couldn't see anyone who looked like her.