If Tom decides to share his own work history with the world, that’s Tom’s business. Imagine he decides to go job hunting. He puts together his resumé and shares it with a headhunter. I think we all expect that he is not supposed to take all of his friends’ resumés and hand them to the headhunter as part of looking for a job. If a headhunter asked him to do that, we’d call it pretty sleazy. And if Tom went along with it, we’d be upset with him.
Yet that’s exactly what’s going on in the world of Facebook by default.