The average click-through rate for Facebook ads was 0.063% in 2009 and 0.051% in 2010. Click-through rates used to be about 3% in the 90s, but have been declining since. Current industry standard is 0.1%.
I heard that facebook is good for awareness, just to let low- or no-paying people know you exist, but click-through rates are pitiful, indeed.
CTR has declined since the early days but profitability has really increased. Check out some of the ad management tools if you're having trouble - they can really help you get into the data and find results :)
Did they go to prestigious schools and get graduate degrees because they were rich, or did they become rich because they went to prestigious schools and got graduate degrees?
The visualization is interesting, no doubt, but I found it to have too little detail to really be able to draw any conclusions from.
https://news.ycombinator.com/item?id=5572765
and yesterday too:
https://news.ycombinator.com/item?id=9122788