mr. spiezle? >> the browser technology doesn't exist. think i think we're talking about a combination of operational best practices and technical. it is a complex eco-system with as senator mccain stated with multiple intermediaries. this is a desired state. if we can't vouch for who the advertiser is we shouldn't accept the ads in the first place. that's the first part. that's in the preventative side. but that's operational. >> can it be done? >> pardon me? >> can it be done? >> i believe it is. >> is it done now? >> yes, we have agreements with the ad networks we work with to have them pass information through. if we find they are problematic they we -- >> do they verify? they put on ad? >> i'm not sure. not sure what each network does. >> mr. salem, do you? >> our ad networks are verified, but they can have advertisers they have direct relationships with. we do not know what the relationships are. >> but the people that you have relationships with verify the cred ability of their advertisers? >> they have a vetting process themselves