You do still have a suspicious iframe containing domdex IIRC which is found through other software than AVG. The warning may be a result of this invalid or suspicious iframe entry.

www.unmaskparasites.com is one of the site inspectors returning this error.
<IFrame> hidden link - http://domdex.com/f?c=560&k=travel, hunting trips, hunting

The vBulletin software is also outdated and a site inspector utility recommended updating

Web Accessibility Evaluation Tool: http://wave.webaim.org/
http://wave.webaim.org/report#/http%...et.com%2Fforum is reporting numerous errors and alerts but nothing malicious

BTW none of the site scanner links seem suspicious and are recommended by http://forum.sysinternals.com/free-o...opic22045.html which is endorsed by Microsoft and i believe to be owned by Microsoft.