"umm, when a game is blacklisted, wouldnt the original also refuse to run? if so isnt that a good way to see if it was blacklisted."
Generally, the originals WILL run, as the blacklisting only checks to see if the drive that the game is being run from is an emulator. However, sometimes protection developers take a more blanket approach and won't run on any system with virtual drives active or even installed.
Some blacklisting methods actually try and stop virtual drives from working, however certainly DT, and probably Alcohol, have built in security measures to make this difficult.