I started in 2009 ish. I had a nice gig fixing Xbox 360's with the red ring with ads on craigslist. Then moved to websites in 2010, I had my breakthrough in 2012. Until then, I was happy if I was making $10-$20 a day with Adsense. Then I started promoting Amazon and hit some big keywords, and thats when I started making the bigger bucks. Promoting Black Friday 2012, I think I made like $10k with Amazon in a week alone.
Things changed though, I moved on to other ventures.
I enjoyed my Xbox 360 Fixing gig the most.