I searched on google for a 'keyword popularity checker' because im busy with a little SE project and i wanna see what keywords and keyword combos are popular of a niche or w/e. 
I found this site 
http://www.123promotion.co.uk/ppc/
Now my question is, whats Overture and whats Wordtracker? What do those terms mean? 
Since they also talk about google, i think Overture has something to do with google? 
I dont know if this is a newbie thing, ive just never paid much attention to the whole SEO thing since about a week ago (when i saw the conversion ratios!).