Pretty sure he's talking about the cursor control.

On the note of referring: It would be nice if people could actually link to specific features and/or videos on your site so they could be talked about with references. Also, in different browsers (Opera 12 and Chrome on windows) your videos play and load slowly and don't seem to play all the way to the end.

Edit: Also on my (fairly big) monitor the video is zoomed in so much the top and bottom are cut off, and the text entry field isn't displayed at all. Seriously, you need some guy to test your website on various stuff and yell at you if it's broken, if you make a super-fancy one that eschews all the hard lessons learned in the 90s.

Lastly, props for including a warning that this is iphone exclusive. This may sound sarcastic, but i'm honestly glad when ios developers let everyone else know that they don't need to waste time investigating and/or looking forward to a product.