You can't catch people doing this. It's funny you come here and try to scare people. I use it all the time.
Scared that Yahoo might find out and take all your money away? And maybe they will learn that they have a crappy search engine that doesn't even bring up Netflix.com as the top choice when you type in Netflix.
That's why people have to use a script to search. They wouldn't find anything they were actually looking for using Yahoo search.