Hacker News Reader

Has been done, see my comment above.

http://failheap-challenge.com/showthread.php?12731-Once-upon...

The images are 404, but they used a background with slightly different color and something similar to a QR code.

The background trick is cool, but what happens if the user removes it entirely? Lexical Steganography might be a more suitable approach: http://web.mit.edu/keithw/tlex/

Just skimmed it, but is that not close to method #2 the same Alliance used: http://failheap-challenge.com/showthread.php?16311-Taking-th...

Reply on news.ycombinator.com