where does overture get their data from?

[Makaveli2007]

Do they use the data from yahoo's search engine?

I'm curious about that as in Germany and France yahoo only has a market share of < 5%. So I need to know if they get their data from the yahoo-tool, so I can compare the keywords a bit to each other without being completely off.

thx

[justablink]

Yahoo owns Overture.