Obviously this wouldn't stop anyone willing to put a bit of effort into decoding it, but I bet lyric sites start using this soon.
Edit: Apparently I was confused like several others, but came to the right conclusion anyways.
As for lyric sites, they don't A) want people stealing content, B) have strict rules when publishing lyrics.
Or copy into the address bar.
Still pretty pointless though, since substitution ciphers are child's play to break.
It's an interesting result that probably hasn't been considered by most people.
Also, child's play is big business.
The only saving grace for this might be in internal sites where you want to display information to the user but do not want that user copy/pasting sensitive information into emails/chat/ect.
IMO that'd be cool.
Given a long document, one could easily crack this Caesar substitution cipher. Of course one could also do OCR on the characters to learn the mapping.
Tangentially, these thoughts remind me of a cool Master's thesis [1] where they did basic OCR, by clustering blobs of ink and solving the Caesar substitution cipher, rather than trying to recognize the shapes of the letters! That approach can be used to adapt a real OCR system to the current document.
[1] http://www.cs.toronto.edu/~scottl/research/msc_thesis.pdf
If I can see it I can copy it regardless of how fun you make the process.
You'd be better off just releasing it under a license of choice. Technical means of protection are pointless.
