Not sure if you've had a chance to check out Yahoo! Clues yet, but if you haven't, I would take a look if you're responsible for managing search advertising at your company. There is some powerful and insightful keyword data available in the Trend Analysis section. Yahoo! Clues (beta) is a search keyword trending tool. While it gives you a peek inside what's trending for searches on Yahoo! (sports, people, places, etc), it also gives you a peek into how your business stacks up against your competition when it comes to keyword searches. One of my favorite reports under Trend Analysis tab is called Search Flow. What Search Flow provides is "a list of the most probable previous and following user searches from an analysis of aggregated search patterns across Yahoo! Search. The top item under Previous Queries represents the most probable search term people tried before this search query. Similarly, the top item under Next Queries represents the most prob...