What I Found

The following list of 14+ keyword research tools to help you understand what people are searching for, and, therefore, what people want. Lucky you!

1. Google Insights for Search - Full-featured keyword research tool.
2. Google Trends - Compare search terms side-by-side.
* Google HotTrends - The hottest search terms right now; updated hourly.
3. Google Suggest - Provides related search terms in a drop down menu as you type. YouTube has the same feature for video-related search terms.
4. Google AdWords Keyword Tool - Keyword research for commercial search terms that are bid upon for Google ads.
5. Yahoo Search Marketing includes a keyword research tool.
6. Microsoft AdCenter Labs has a whole host of keyword research tools, including a and search funnels tool, audience intelligence tools.
7. KeywordDiscovery - Full featured, subscription-based keyword research tool. Free version. Keyword Directory - identify specific search terms that drive traffic to web sites within each industry category.
8. WordTracker - Full featured, subscription-based keyword research tool. Free version.
9. Compete - Full featured search analytics tool with limited free access.
10. Keyword Country - Full featured, subscription-based keyword research tool.
11. Facebook Lexicon - Keyword research tool for searching Facebook walls chatter.
12. Technorati Keywords Charts - Chart the blog keyword mentions with an embeddable chart.
13. Twist - Like Google Trends for Twitter.
14. Spy - Spy tracks real-time keyword mentions in Twitter, FriendFeed, Flickr, Blog Comments, Yahoo News, Blogs and Google Reader and allows you to subscribe via RSS.

http://e-strategyblog.com/2009/03/fourteen-keyword-research-tools-to-und...