You aren't hashing passwords! My god man, you dare use the lulzsec picture and you don't even understand the most basic security step to protect your users!?!?!
I'm so tight about security, I use hashing on my image names!
I'm being serious
$this->imghash = sha1(md5($api.$site).$cotent.md5($color));
Actual code pulled from my script

Anyways, I personally never found any profit in doing surveys recently.
It's a good idea though.