The idea behind it sounds awesome. Post a comment with a link in to to an authority site and when they are done on that site a pop up with your opt-int,video etc. pops up but most things are too good to be true. Outside of FB not sure where else you could use it because most message boards have to approve a comment with a hyperlink in it before it is approved. I'm thinking Cragslist or Backpage perhaps?
Anyone tried it? It was on the JVZoo top 10 list a few days back but has dropped off since.