If you get the 'another forum' message, does it give you a chance to move your profile from that other forum? I'm uneventfully registered with the Opinion Outpost, Survey Spot, Accor, United, and Jet Blue versions of the SSI survey web sites, and when I signed up for the IHG version, it just let me copy the profile stuff from my United site (Opinion Miles Club) over to the IHG surveys site.