Microsoft released a monster 64-mb keyword research tool tonight - download it here. The free tool, still in beta, is a culmination of research conducted at their Pac Rim adLab. It's called the Microsoft adCenter Add-in for Excel 2007 - and (obviously) you'll need Excel 2007, which Microsoft offers as a 60-day free trial.
Plans for the product were discussed in December at Search Engine Strategies Chicago.
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 5 December to take advantage of Early Bird Rates.