Where does Wordtracker pull its keyword results from?
Wordtracker now offers a free keyword research tool providing results for keywords with a number of searches. Where does this data come from?. I know Overture’s keyword tool results come form Yahoo. What about Wordtracker
? What search engine does that tool pull them from?

All search terms are compiled from the major metacrawlers – Dogpile and Metacrawler.
This is an excellent service and high recommend it.
Good luck