Almost forgot to mention this, but for you Analytics junkies the same issues that prevent proper implementation of adwords conversions also prevents truly accurate implementation of GA code. SO - if you are using eBiz and Iframe and deriving data from Google Analytics, you aren't getting accurate information on what's happening with your site.
eBiz does provide a decent analytics tool themselves and you can piece your GA results and eBiz results together to get accurate data on your site, but its a HUGE pain and you need to be an advanced Excel user to do it in a timely basis...
I would LOVE LOVE LOVE someone to provide a solution for this... I'm working on developing my own inventory hosting solution, but it isn't going to be easy or inexpensive to accomplish...