How can Affiliate marketing program Directories Benefit Affiliates?

We all know that affiliate advertising and marketing is becoming ever more popular among the peoples of the earth. Online marketing, being an internet home company, is but one strategy that is good to increase one's income without putting in a lot of effort. It also helps advertisers sell their products without incurring too much expense and overheads.
There are many millions of affiliate programs on the net. Affiliate directories classify and display these programs in groups which are different.
What exactly are affiliate program directories?
What are affiliate program web directories?
An affiliate program directory, as the title indicates, is a directory that lists several niche or target web directories for the convenience of affiliates as well as advertisers. Affiliate directories are very much love Web directories including the Yellow Pages or online directories including the Yahoo! or Google directories.
Directories systematically categorize websites by their niche, products, location or maybe commissions given out.
How are affiliate dirs different from other Web directories?
How are affiliate dirs distinct from some other Web directories?
Affiliate programs directories - http://photobucket.com/images/directories are meant to benefit those taking part in online internet marketing businesses. They give a detailed list of all the programs, advertisers as well ecommerce platform as a service - https://www.peninsulaclarion.com/national-marketplace/kibo-eclipse-revie... affiliates available with them.
What is really special about an affiliate marketing directory?
What is so special about an affiliate marketing directory?
What is the difference between affiliate networks and affiliate program directories?
How can affiliate program directories guide advertisers?
How do affiliate program directories benefit affiliates?