Google Insights for search ?

Has anyone used Google Insights for their keywords research?

I use Google Insights quite often.

One of my business models is setting up lead gen sites and selling the leads for a flat rate, commission of job, or lead packages.

When I find a market I want to target, I use Google Insights to drill down to the most popular location, then use that data to put together a lead gen site for the location that Insights told me the market is hot and ripe for the taking.

If you don't work as a Marketing Consultant or Lead Gen wiz, Insights can still be useful. At times, Insights will give you search data that standard keyword tools don't give you - like which search terms are "breakout" terms, meaning they have become popular search queries in the past few weeks/months.

yes it is used quite often but the adwords keyword suggestion tool,seobook tool are more popular and helpful