$5 is extortionate. That's a weeks wage in some parts of the world.
A moderate user (say 1 or 2 blogs/week) needs ~5-10 accounts just to get a basic level of anonymous identity division (thus upwards of $25). Not to mention the time and effort of getting the right form of anonymous money. This overkill is being imposed on hundreds of thousands of users for the convenience of a few admins.
It's not worth it. The high price in time and money has made the system inadequate for anonymous blogging. Users will pay the price in freedom instead.