Last year I came across this pof tool and played around with it for a bit. http://www.pof.com/demographicInterests.aspx
2 days ago it hit me hard how usefull this tool could be for media buys, facebook etc
You can uncover great niches
For example type i typed in bingo
GENDER:
Male: 27.64% (expected is 100%)
Female: 213.77% (expected is 100%)
Age
45-54: 232.38% (expected is 100%)
55-64: 648.74% (expected is 100%)
65+: 1592.31% (expected is 100%)
Now think outside the box. Media buy on bingo sites for skin care product.
Just play around with it and youll find untapped goldmines
yea great tool thanks for the reminder about that one. fortunately for all of us, this tool is conveniently located here http://affexpert.com/tools/demographics.php . just go to "affexpert tools" and it's in the pof section. it's pretty convenient for us given the fact that we can do market research within this forum instead of going to different sites to collect data! 
How can we know if that tool is accurate guys??