as far as I can see, not all cookies have to be deleted to twarth this 'evercookie'. It seems far easier to simply swap the cookie data in accessible places, tricking the script to return erroneous data. However, this could be defeated if the cookie content was signed to prove its origins. Furthermore, I'm curious as to whether or not this type of cookie could potentially work across domains, considering the multitude of data storage methods that may not all be isolated to a single domain.

1.Convert PI to binary
2.Interpret binary PI as ASCII
3.Search for the complete works of William Shakespeare
4.Once found, use number to produce compact William Shakespeare quote generator.

judging from the article, what he does isn't necessarily hiding data within other content. More likely he's written an encryption where the encrypted content conveniently resembles data that the government of Iran finds undesirable to ban, such as legitimate requests to government websites. Of course, if you're talking about the invite-only principle, I can only assume that it will help spread the software in a wider area whilst initially making it hard for the government to access and reverse-engineer the software. Every day helps, I guess.