What was Luis von great idea for thwarting spammersHow does it work?

There seems to be a misunderstanding. There is no widely known figure or idea called "Luis von" or a "great idea" associated with thwarting spammers.

It's possible that you might be thinking of:

* A specific person or project: If you can remember more details about Luis von, like their profession or the project, it might help in finding the information you're looking for.

* A misspelling: Perhaps you've misremembered the name or a related term.

* A fictional character: It's possible "Luis von" is a character from a book, movie, or TV show.

Please provide more context or details about what you're looking for so I can help you find the information.