Google Insight for search allows users to see the search volume patterns for you keywords and phrase, and giving you the top five similar searches and the top five up and coming searches in that Category
The google insight tool allows webmasters the opportunity to see the search trends on their chosen keywords and the best alternative's to help focus their keywords towards current trends. Based on the google's search auto complete, this free tool helps narrow the best keywords for your chosen project to help give you the best results within the google search.
Google insight is a fantastic tool when used along side the google keywords tool and as both are free, it is a fantastic starting point for webmaster's looking for good keyword to help promote there site. As google insight is based on the auto complete function of google search it will show you the best options offered to google user's as they are typing into google what they are looking for.
Google insight not only gives you the top similar searches, it also allows you to define the region you are targeting so you can tune your keywords to the local search terms currently in use, therefore improving the quality and quantity of traffic you are attracting.
Why not check out some of my other related article, which you may also find useful when looking for new ways to increase traffic to you website or blog.