Facebook advertising benefited me a lot in last 2 years. It generated very good traffics and daily readers for my blogs and websites. I think you need an eye-catching niche to attract readers from Facebook to your blogs or websites. Mostly I use a Facebook page to generate traffic for my blogs because it's beneficial to have a Facebook page with over 100k page likes. So most of the time I advertised my Facebook page instead of my blogs. Good thing is that now I can generate traffics for other affiliated blogs and websites too. I think Facebook made lot of changes in last 2 year in their Facebook ad campaigns and they made very good changes.
What about anyone uses Facebook ads and what is your experience? If you used any other social networking advertising like Twitter, Instagram, Pinterest, etc. then do let me know what is your experience with social networks advertising?