We don't so much over here in Britain - it's very much a mainland Europe thing (particularly in France where it varies hugely from one to four kisses now, I believe). It shows up more after Amy, I think... it's quite hard to see sometimes unless you've been made aware. My fiancé is an activist on Everyday Sexism so she's quite up to date on these things - I never would have thought/spotted it if I hadn't been told beforehand.

Also Captain Jack I do lurv.