We've been having a bit of trouble with passport related spam over the past week or so.
I'll implement some more anti-spam measures shortly - one partial measure will be to extend/change the signup questions/captcha type thing that currently exist. These are of the type "finish this word: Somebeachsome....."
Ideally these are something that a normal harness fan from anywhere in the world would know off the top of their head but might be hard for a bot or somebody getting paid $1 an hour to figure out.
If anybody would like to help please PM me with any questions that fit the bill.