I have a tool that gives me data about any website, including:

- Demographics (Gender, Age, Household Income)
- Sites visited before that website
- Sites visited after that website
- Exact visitors
- Keywords referring traffic

To prove it, I did some discovery for Digital Point Forums:

Demographics
GENDER
Male 59.41%
Female 40.59%

AGE
18-24 year old visitors 55.99%
25-34 year old visitors 9.71%
35-44 year old visitors 19.37%
45-54 year old visitors 7.56%
55+ year old visitors 7.37%

HOUSEHOLD INCOME
< $30,000 30.06%
$30,000 - $59,999 25.24%
$60,000 - $99,999 30.50%
$100,000 - $149,999 13.01%
> $150,000 1.19%


Sites visited before DP (only top 5 shown)
Google 38.63%
Yahoo! Search 7.04%
Bing 6.64%
Facebook 3.66%
Ask 2.47%

Sites visited after DP (only top 5 shown)
Google 6.05%
Yahoo! Answers 2.48%
Bing 1.75%
YouTube 1.75%
Wikipedia 1.53%

Exact visitors last month (only United States shown)
289 000

Keywords referring traffic (only top 10 shown)
gooogle.com 1.03%
ymail.com 0.86%
linkshare scam 0.83%
how to see who views your facebook profile 0.81%
digital point 0.72%
how many paypal accounts can you have 0.66%
yahoo mail ymail <0.66%
suzuki supermoto <0.66%
live barcelona <0.66%

As you can see, this is very useful data. You can use this on your competitors to see what keywords bring them traffic, what their target demographic is, what their traffic numbers are and what sites they are losing visitors to. You can also use this for your own website (although GA should have some of this covered already).

Prices are $25 per report via PayPal.

I also have data that can tell you
- Top 30 000 Keywords searched across all search engines

Price for that is $50 via PayPal.