> it would have to be the user did not want to receive that email from the person who sent it to them. so this is fully in control of the gmailount holder. and they can refuse to see emails from certain people. >> you would be putting the burden of privacy collection on a user of gmail? as someone who actually has a gmail account? but your user knew the policy was and could today right now go online as you've showed you've got many opportunities for your user to see opt out. >> that's right. . >> the person who's the third-party, who's part of that thread, does not have that same access. so how can you put the burden on the person who sent the email? >> no, no. the person who sent the email has -- they've sent their email to their friend. that user is not going to get any ad targeted to them. we're not going to have any information about that user at all but for the fact we hold their email because we're the email service provider for the gmail account holder which is the same as any other web mail service. >> and i guess the real question is, how is that person -- the gmail subscriber clearly has the ability to protect their