People can guess the URL on the first day of sale too, then it is shared. This gives a leg up for the 18-25 allocation with most people wait for Buy Tickets button to show up, whilst if you have the URL and qualify in the first window you can access the sales page for that game and just need to check out at 10am. This advantage of a few seconds means certain people always get tickets and others who don't know or have the back door information never do.
It would be good if the URL wasn't a predictable format and if it wasn't just a fastest finger first system too for that matter.
I know it won't be popular will the small minority who benefit every time though
@Alex - City Matters