highest rate that i am aware of is 0.0015 per post for Hero and Legendary members.
2/0.0015 = 1333 post per week! or 190 post per day
[first of all you will get banned for spamming but..]
if every post takes 2 min it is over 6 hours of mind numbing job!
You said that one will get banned for making those many posts, that can be considered.
But what if the guy picks a topic which he is familiar with? How can one spam with things someone is already familiar with?