The fastest way to get a response is likely to be through Twitter. You can send me a message by signing up to Twitter and putting @alun at the start of a message. If you want to read more about Twitter, I wrote a post on it as part of the Tech Tuesday series.
You can email me, but I get quite a bit of email. The address is contact@ and then alunsalt.com. This is a disposable forwarder, so if I get a lot of spam I’ll change it to something else. I may have others, but they tend to get used for very specialised functions, like work, and have highly aggressive spam filters. If you send to another email address then I’m unlikely to see it.
The academic address which it’s best to contact me at is:
c/o The Centre for Interdisciplinary Science
Dept. of Physics and Astronomy
University of Leicester