The Register has a funny article about things that British spy agency MI5 is telling people to be wary of when they travel abroad. Two favorite quotes:

In a blow for the traditional holiday romance business travellers are also reminded: “If you are required to report intimate relationships with the nationals of certain countries to your Security Co-ordinator, make sure you do so promptly and honestly.”

And:

Travelers should also look out for lavish hospitality . . . Presumably you will know if you are being recruited by British or American intelligence services because they will tie you to the ceiling and deprive you of sleep rather than seduce you with such luxuries.