you would pay them with bitcoins to create a whole online persona for you on facebook, twitter, linkedin ect that you would use as a backup in order to fool competitors, hackers, and govt authorities trying to track you down.
for instance your anonymous identity that publishes a democracy blog about china gives very subtle hints to this new fake online persona you've created, so when chinese authorities think they've found you they are in reality chasing nothing. kind of like when hackers sit together in a channel and if you log an entire month's worth, they start dropping personal information either purposely or accidentally by slipping up their opsec 'hey bro i went to that school too'.
only this time it leads to a maze of confusion instead to your front door like Jeremy Hammond.
could bundle this with other anonmity service like running a .onion newsgroup server for alt.binaries.messages retrieval