Must things have "iPad" attached to them for no reason? "iPad" is nowhere in the article, nor even alluded to. News sources do this often enough, does it really need to be done here when even they didn't stoop so low?
Real title:
>WhiteyBoards Introduces the Next Generation In Dry Erase Technology: The WhiteyNotes and WhiteyPads
My experience with WhiteyBoard was cool, but disappointing after a while. Installing was really easy, it was big and it was easy to write on. The problem came later: Stuff I had written weeks ago had become pretty much impossible to erase without a lot of effort, which made it useless to me. I'm not sure if this is true of boards in general or it's a whiteyboard thing though.
Have you tried using rubbing alcohol to clean them? This happens to nearly all dry erase boards, and those spray bottles are mostly alcohol.
About the only way to stop this from happening is to use glass. And even that can get hard to remove in time, but it always comes off completely with a little alcohol, where normal whiteboards can still leave ghosts. Though glass does have the uncomfortable attribute of giving you a bit of double-vision (if on something white, marks leave shadows), or having poor contrast (if it's suspended with no back).
Real title:
>WhiteyBoards Introduces the Next Generation In Dry Erase Technology: The WhiteyNotes and WhiteyPads