I remember I had a website once where I had a little clock widget that I made in flash. I discovered that some of the traffic to my website was coming from myspace and found out that someone had used my widget on their myspace page. I changed the code in my widget to detect which url it was loaded from and if it wasn't on my website, it would simply crash and back then, flash didn't have the 30 second timeout when a…
The boss never let me do it, he decided to sic the lawyers on them instead.