If you need or want to contact me, the best way is probably by email. Please note that unsolicited commercial email (spam) is not welcome; stuff like this ends up going directly to the bit bucket, so please don’t waste your time or my bandwidth.
Here it is: sam -at- sgp -dot- me -dot- uk.
I have a PGP key (download). Id:
3fd9 91a2 f12b bfa2 ed31 2fa4 453c a714 40e7 4c48. If for some reason you’d rather not download it from this site, try a keyserver like pgp.mit.edu.