I would like to point out that sometimes this is DRASTICALLY wrong I've found that out after getting a few domains I though had much higher search volume, still gives you a better idea than for instance google trends or any other keyword tool i've ever seen. The rest are trash, this one is average...works for me... most of the time.
Hey, thanks a Million, been lost since the old one died. Now I can tweek my underfloor heating keywords without having to spend hours looking through competitors sites..Thanks again..