Many times i have seen people asking the same question whether directories are helpful for making money etc..
So here is one more good way for directory owners and webmasters to earn more from their resources.
I managed to make a list of 6 directory affiliate programs, with enough good payouts and affiliate commissions.
You can check the whole info here -
Affiliate programs of web directories 
If you have any affiliate program associated with your directory, please let me know.
And also if you know any other directory related programs, you can share that too. Thanks for reading
If you are already in any of the programs which i listed, please share your experience with them.