Surely you don't expect ordinary people to "find holes in their [online] presence" using this tool...

This tool is recipe for stalking.

Honestly, searching for myself was the first thing that came to mind when I saw this. Although I might not be an "ordinary" person.

Would you also consider Google search a recipe for stalking? It provides a larger set of results, but you can easily narrow down your results to social media sites...

It’s a tool, much like a knife is a tool. They can be used for good or bad. The tool is indifferent.

People who have something to be ostracized over do this all of the time. This tool is great for someone trying to hide something about their identity (e.g. being gay).