Managed Add-Ons is a feature of Internet Explorer 6 and 7 on XPSP2 that allows the user to view and enable or disable individual ActiveX controls and add-ons. You can access this tool by clicking Tools -> Manage Add-ons -> Enable or Disable Add-ons. Within the Manage Add-ons interface, users are able to see the control���s Name and Publisher. Since many times users make trust decisions about controls based on this information it���s important that we sign out controls so that users are confident that the control was developed by us.
Attached is a screen-shot showing which controls we should sign.