Sort:  

where do I undo these posting permissions? It's outrageous to have so many unknown online identities to be able to post / vote on your behalf. Huge attack surface. Got to prune this list ruthlessly!

Thank you for responding with a concise and easy to understand answer, it's much appreciated! :)

What does the 6.25% mean? Is that a percentage of payout or a percentage of something else that you do not get and which goes out to those apps?

It is the percentage of the listed authorities required to carry out a transaction. Since each is 6.25% and the Threshold at the bottom is also 6.25%, it means that any one of those authorities can make a transaction on your account.

I guess I should write an authority management app for that.