[tannhaeuser]

> Without metrics such as conversions which require end to end tracking advertisers will need to rely on the reputation of the platform. Products such as google and facebook will receive significant attention from advertisers.

Yes that's a valid concern. But blogging hasn't been profitable or even sustainable for a very long time now in the way it used to be ten or fifteen years ago, with YouTube, Fb, microblogging platforms, and news aggregators having taken this space instead. Those who keep on running blogs do so for promoting their own services, products, or other agendas, or as a hobby, and will continue to do so. So it's not a terrible loss really; the great starving of blogs has already happened in the past.

But sites such as product review blogs could get a boost by ad money being in need to be allocated in innovative ways. Post-GDRP advertising requires thinking a little bit out of the box, and leaving the "ad" model as we know it behind which isn't very effective to begin with. If you consider attention a scarce resource to compete for, I could imagine ad money going into more and new native advertising sites, temporary sites for local events with direct sponsoring, focused sites for special interests, etc.