Bad social networking idea of the day

Mylife.com is a find-people-you-know service that evolved out of one of the sites to help you find classmates from long ago. The services they sell are straightforward - forums to chat with your past classmates and fellow alumni, searches to find people you went to school with years ago, some basic messaging, and being able to see who's searching for you.

They are now offering a brand new service - you can search to see who's searching for other people!
They suggest that you might be interested in looking to see who's looking for your spouse, your ex, etc.
Now, as regular readers will know, I'm an eternal optimist who always believes that the world is made of puppies and rainbows, so I have to ask myself..

What could possibly go wrong?

Speculators, start your engines.