I don't know why the sites are setup as they are. I agree it can be confusing. I've often run across people on this site that think it is the justkdx site. Well after all, it SAYS 'justkdx' right on it!
So..you could refer to the other one as 'Canadian Dave's Justkdx' site. But, but...that's what THIS one says, too!!
To top it off, there isn't a direct link from 'here' to 'there'. You can click on one of CDave's post's buttons that says 'website'.
The obvious difference is that one (the other one) is THE Justkdx site. THIS is the Justkdx forum where a bunch of green people yack at each other (and ask the same stuff over and over).
...doesn't answer why there isn't much linkage between the two.
A BTW...if you're someplace other than your computer (not bookmarked on the computer you're using) and want to get to CDave's site, take note there is NO www in front of the url. It's only 'http://justkdx.dirtrider.net'.
But, there 'ya go!