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?
one must be the most wise guy in the planet to be able to post 190 posts/day, with 2 min interval between posts all in topics he is familiar with and without spam