I doubt many people are doing this. Many times the pixelation is visibly obviously terrible. In fact if you look at the pixelation challenge in this post, you c

I doubt many people are doing this. Many times the pixelation is visibly obviously terrible. In fact if you look at the pixelation challenge in this post, you can almost simply read off the answer with just a bit of concentration. I see a lot of things like that, sadly. The cryptographers like to say that just because you've created a cryptography scheme strong enough to defeat yourself doesn't mean you've created a strong cryptography scheme. I feel like redaction is much the same. You really need to go with solid, proved techniques, and avoid the proved-weak ones.