We have already seen (here) that Microsoft allows customization of user-agent strings. I customized a version of Explorer by inserting "Buckets", surfed over to useragentstring.com, and took this screen shot:
Then I exited Explorer, rebooted, and visited the same site using the RealOne Player. Here is the screen shot:
The presence of "Rogers Hi-speed Internet" in the user agent of 90sAREover, therefore, requires that his browser was one of those customized by Rogers, even if he wasn't using it to directly visit freedomsite.org.