Sign up for a 30 day test drive of your own dashboard. The user would complete a short form and enter in the information needed to track X number of brands. Most of the brands would be preloaded (Pulls RSS feeds for each Brand) but the user can also specify others if the are now available.
The system would create their custom dashboard that they access with a login. The site is up and running but the changes would need to be added to this existing site, unless there is a better way to do it.