If you are registered, you get access to the members only section, can participate in the buy & sell second hand forum and last but not least you can reserve your preferred username before someone else takes it.
I have the 18-40mm lens and like it. I don't use it a whole lot, but when I want to carry something smaller than the 24-60mm it is good to have. I used it for some helicopter shots a couple months ago and it worked well in the cramped cockpit. It might even work in a glider.
If I didn't already have the Lumix 14-28mm, 18mm f1.8 and Lumix 20-60mm I'd be pretty tempted too. I really really don't need another wide-ultrawide. Someone somewhere must have got a hold of a stack of the 18-40's, there's a few eBay sellers flicking them in the mid to high $500 Au range.