Facebook's tagging system is originally for tagging peoples pictured or mentioned in photo or posts, but has been used these days for "look at this" kind of notification. Facebook's notification system by default tells all Friends if someone is tagged, even by strangers or spammers. Combined... great and efficient way to spread spam in this Facebook era.

1. Spreading ads in Facebook with photo tagging

2. Suckers befriend Spammer Be my friend and get info about great offers Friend Sucker Spammer

3. Spammer tagged the sucker in ads Tag Spammer Product

4. Sucker get spam ads That spammer said you’re in one of his photo of you Ads pushed into news feed Notification in news feed Totally clueless Facebook Sucker

5. Sucker’s unfortunate friends get spam That spammer said your friend the Sucker is in his photo Notification in news feed Sucker’s friend Notification in news feed Notification in news feed Sucker’s friend Totally clueless Facebook Sucker’s friend

6. Result I’m just looking for deals. It’s not like I hurt anyone Ads exposure UP! Sucker is totally blissful Spammer got more eyeball looking at his ads through “downlines”

7. Problem Even if the spammer got reported, it’s easy to make a new Facebook account. Probably Facebook only cared about user count for their valuation. Facebook never had White List option to fight against spams Including the age old Apps spam problem. It’s too troublesome to tell each and every sucker to set their privacy level Seems like regional problem, so whistleblower tech sites likely won’t raise the issue