http://www.nichebot.com/
"Find exactly what people search for" and you will...
Gain better search engine placement by targeting the right keywords.
Google Sandbox:
https://adwords.google.com/select/KeywordSandbox
This won't provide you search numbers, but will give you keyword options.
Google has made it's adwords keyword selection tool public. previously it was only for adwords costomers. Now we can findout which keword pays you more.
http://adwords.google.com/select/KeywordToolExternal
You can findout which keywords related to your url pays you more!