I went on an interview at flipps.com and wrote some "sample" code to fix their horrible, memory-hungry iOS app. I only improved a single view of the app(because I suspected something like this might happen).
The company didn't wish to move forward and hire me to fix the rest of the app. I didn't think much of it and thought that was the end of that.
But to my surprise they immediately shipped my sample code to production! Now, I am aware of the legal status of code written as a "sample" and they probably don't owe me money for it.
I'm not looking for vengeance, and I'm not really all that angry. There's more code where that came from and I won't starve without their business. But this an unethical way to go about software development.
And it is especially dishonest toward their investors(who think they've made an investment in a technologically-savvy company, not just software thieves).
If you wish to drop them a line, the site is flipps.com, and their main investor is http://launchhub.com.