I don't understand why this is being represented as "Your pics can now be stolen" - a key proviso is that they have to do "a diligent search".

Google Images (for one) allows you to search by uploading a photo, and I can't remember the last time I was able to "beat" it by downloading a photo that it couldn't identify the source of.

If you're a pro and want your photos to stay yours, put it where Google (or whoever) can see it and it if somebody steals it, you have every right to sue them for failing to do their due diligence.

Am I missing something?