A very kind post on Metafilter reminded me that I'd made permanentbedtime a while ago and the only people I'd told about it were friends of mine with jetlag. Which is a small subset of a small group. So now I've told you. It's an audio service for radio 4 listeners who can't sleep.
In fact, I think it was Permanent Bedtime which made me think of S3FM, which Tom kindly built. Which, if you want to make your own sorta-radio station is quite handy.