So... last night, one of the job agencies I fed my CV to, who knows I've actually accepted a position elsewhere, scattershot a plea for a 6 month PHP contract to a large list of people.
I dropped back a mostly polite note pointing out that this wasn't perhaps very smart. The reply:
"Unfortunatly you are included in the same file as PHP, along with every other perl developer."
Houston, we have a perception problem.