QUOTE (Disguised @ Jan 20 2008, 06:28 PM)

Generally "white-hat" hacking and exploiting isn't looked upon in a negative way, but it's always good to inform the person you'll be testing the injection on beforehand, as well as let them know if they are vulnerable to attack, and even how to go about finding a solution to the problem, if you're really nice

hmmm... .you might want to reconsider that thought. I've seen it quite too often that a "white hat hacker" had a nice push just because he was helping people out.
They don't know you and most of the times they don't like you snooping around.
Make sure you get approval before doing anything trying to bypass security mechanisms.