Generate Unique Links to be able to track sources to Hubs

Use case... Thousands of Doctors offices will give a link to their patients... to our hubs -- great, we love it! However, we need to determine for those members coming in from various sources... could even be from advertising, FB posts, blog entries, ethical bribes... WHERE they are coming from. If we could concatenate the Hub link with something unique that Searchie could store for review... this would be a big help in determining what sources to Amp Up... and which sources are a waste of time and money. If it could be stored and a CSV export created... this info could be easily analyzed outside of Searchie -- so Dev doesn't need to create reports -- just a data dump would be excellent!!