[New Post On Sovedo] $1 Price Tag To Reach Facebook Your Inbox...What About Permission Marketing?

Facebook just announced a new ad model - where marketers can reach people's inboxes (not 'Other' folder) for a one-time fee of $1. I thought this was interesting as Facebook Messages is competing with Emails...Applying a few principles from Permission Marketing (by Seth Godin), Does this sound like a good approach?

Here's a link to the article: