Because the script is being run inthecontext of the trusted web site, it has access to cookies such as session tokens, as well as any other user information available within the security context of that web site.
In addition, marketers can target those ads bought via exchanges directly to people who are likely to be interested in their product or service, regardless of thecontext of thesite where they appear.
HipGeo claims this makes it the only startup compiling photo and video in an easily digestible blog context, drawing on the social aspects of photo-sharing site Instagram and video-sharing site Viddy.