(Posted: 24 May 10, 12:28 http://www.queenzone.com/forums/1230729/-petition-john-pass-queen-at-bbc-to-someone-so-we-can-release-it.aspx
You can actually PM, but it takes a bit longer. Just click on the message icon at the top of the page, then it takes you to your inbox. Click send message and then enter their username in the relevant box, type your message and there you go!
Note: The icon is on the same line as the Google box. The other icons are for member's profile etc.