I also didn't get it, and I worked very closely with Danielle for a long time at Twilio. Then one day my sister-in-law who writes a blog about her hobby farm and Etsy business IMed me and asked "how do I make money from my blog?" She's tech savvy, but the idea of an affiliate network is outside her realm of understanding. I sent her to refer.ly and she instantly got it. That's the sweet spot. It's not me or you.
The big affiliate networks are also typically not friendly to small-time sites joining at all. I run a site with relatively low traffic, and most of my requests to join programs on Commission Junction or Google Affiliate Network get rejected, I'm guessing because I'm not big enough and/or don't have enough track record.
Amazon is one exception where joining Amazon's affiliate program is probably no harder than joining refer.ly, though.
I also didn't get it, and I worked very closely with Danielle for a long time at Twilio. Then one day my sister-in-law who writes a blog about her hobby farm and Etsy business IMed me and asked "how do I make money from my blog?" She's tech savvy, but the idea of an affiliate network is outside her realm of understanding. I sent her to refer.ly and she instantly got it. That's the sweet spot. It's not me or you.