I've created a website called Plantworking, which is a place to get answers to your questions from other people in your climate. It also acts as a collaborative garden log.
To understand the idea behind Plantworking, try and imagine if everyone on Facebook or Twitter was only posting topics that were related to gardening. Imagine the usefulness of that!
I'm actively working on the site, and I'd appreciate any feedback you might have.
http://www.plantworking.com