The problem is that you don't get to opt in and know in advance so you don't say anything confidential over a call. If they gave users a warning then I guess this whole thing wouldn't be blown out of proportion.
That should do it, I think.
> "READ THIS VERY CAREFULLY, THIS IS NOT THE NORMAL YADDA YADDA
> We are going to READ ALL YOUR FILES to index them.
> If you have a problem with this, cancel the installation.
> We are not going to ..."
This is how I remember that part of the installation process for Google Desktop Search. Crystal clear. I knew exactly what was supposed to happen and I had a warning in case it wouldn't be OK with policies at work.
And yes, YADDA YADDA or something similarily sounding was part of the first line.