You really have to be careful with FHG.

When I was grabbing FHG's from Zbuckz I was getting some from my coworker's account (using his login). I logged out of his account and logged in mine. Grabbed some FHG's and after I put them on the web realized that they had all his tracking codes on them. Even when I logged back in the stats area, it was showing his stats with my login and PW.

I learned the hard way on that one. At least in that case one of us got credit for the sales.