I've always used Wordtracker..but someone is obviously manipulating results to sell their scummy SEO services.

Regardless... overall, is it still the most accurate tool?

I've heard of keyworddiscovery.com - any opinions on this or others out there? (aside from overture and Google keyword tools)

THanks in advance!

I personally use Keyword Discovery and recommend it as it shows you a bigger view of the search traffic for a given phrase.

Still not perfect, but, IMO, a better snapshot of activity than WT and the Overture tool.

best solution = run your own ppc ads to gauge actual traffic levels to determine popularity.