Looking forward to being a part of the community!
I have always been interested in cartography - as a pilot and a boater, I definitely have an appreciation for the craft.
My reasons for joining here aren't entirely selfless though - I have actually recently developed a piece of software for the iPhone (called CamRuler) which I think would be really useful for enthusiasts here. Basically, using 'custom reference mode' you can use a map's scale bar to make as many other measurements as you need. I'd love to see someone here give it a try. I have used it with some success - it's not exact, but it can give you a decent idea of distance without having to break out a ruler and do a calculation.
Here's a link for those interested - I hope this is not construed as spam, as I hope to become a contributor to the community here!