You are livin in the "old world."
Once ANYTHING is posted to "the net".... it is EVERYONES property....
Of others are too ignorant, stupid, lazy, to find it for "free...." then those who have the "inside knowledge" are well entitled to market it in another formum.... for a finders/processors/locators "commission."
Because you gave willingly, unencombered, is your blessing.....that others may profit by it is theirs.