[HumanHater]

In that case Facebook should offer user a choice between paying for the service directly or letting advertiser to do that. I doubt that any nontrivial amount of users would choose to pay even $100/year so that wouldn't change anything for Facebook. However it could be enough to comply with weird EU regulation.

[andai]

I heard recently that Facebook was considering this and would have to charge $11 per user per month to make up for the ad revenue.