What I would like to see-
* The web URL- not just the phrase "Diy Go Karts", but rather "www.diygokarts.com" to promote the site and forum at a glance.
* A simple line drawing like Fabroman shows- it translates well to both printing, and vinylcutting.
* UNlike Fabroman's suggestions, (although he did mention it) I would like the line drawing to better reflect what we're all about. A little less "race kart" and a little more "homebrew".
I was looking at clipart last night (Google Search), but we have to watch copyrights and loyalties.
These are just my thoughts, individual mileage may vary.