If you own Microsoft Excel 2007 and you have a Microsoft adCenter advertising account, a no brainer download has to be their adCenter add-in (Beta) for Excel 2007.
I have Excel 2007 on my personal lap top and I downloaded this keyword research add-in recently and I have been really impressed. I haven’t come across another free tool that gives you this amount of actionable data for free. I’ll be amazed if Google don’t offer something similar with their spreadsheet software some time this this year.
If anyone has used this already or is in fact aware of another tool that does all this for free, let us know!