Why did you describe this as unhackable?

I'm not too into the video, especially since it doesn't even show the blocks.

That scrolling reveal interface might not be the best fit for efficiently describing the features of your blocks. This more details page, though, is much better.

http://www.elfblocks.com/more#.VXtm3hNVhBc

Just use that instead. If your call to action is to sign up for a mailing list...I'd put it above the fold.

When is this going to be available? It would be nice to know more about the team behind this...maybe an about page?