So, I knew some bloggers make lots of money from AdSense (and other ad systems) and thought this was a business model for blogs and content sites.

Then I read the blog of PlentyOfFish.com owner. PlentyOfFish is (yet another) dating site, only it’s completely free. There are no paid memberships! All revenue is based on AdSense: check this post for a photo of a $900,000 (nine hundred thousand) check for 2 months and this post on how the business grew (in general it’s a very interesting blog).

I find it amazing you can make $5.5 mil / year from AdSense alone (and I guess PlentyOfFish has other advertising programs). I would still hesitate to do something similar, but it certainly shows it can lead to success.