As mentioned below, Sightwalk is one, I forget the other one. I hadn't heard of the other one before the Street View mess either, so I'm not too surprised. But

As mentioned below, Sightwalk is one, I forget the other one. I hadn't heard of the other one before the Street View mess either, so I'm not too surprised. But as far as I'm aware, Sightwalk made it very public that they were doing this, and did not get much criticism at the time. Their optout method is nearly identical to the one Google is currently offering.