Just checked the bicycle Victoria site and the info from the magazine is all on there - it does say that there is no Australian Standard for trailers, or front mounted seats only for rear mounted seats (the article was written Dec 2008 so not that long ago so perhaps the standards you mention Daydream Believer are new?). Bicycle Victoria rates the Chariot but doesn't come out on top because is expensive so its number one was the Burley Solo by Greenspeed.

I can't wait till my daughter is old enough to take her on a bike - haven't decided on seat or trailer yet - Melbourne is so good for riding.