I'm using wonder wheel and it is a very helpful tool if you know what are the most relevant keywords/keyphrases that you can associate with your search queries. Here's an overview about Google Wonder Wheel http://www.googlewonderwheel.com/
Google wonder wheel is a wheel display of relevant search terms. Clicking on one of the search terms will open a new wheel of relevant search terms and so on.....
Very useful for researching and locating relative and related keywords. Gives a view of what Google feels are relative search terms. Good Tool. Best Wishes
it is same as "Searches related to" shown at the bottom on google search results, but just different (graphical) presentation.
The wheel shaped like tool, with the simple aim of simplifying and arranging search results, is gaining popularity among users worldwide (where available) and reached 1 million google wonder wheels. The wheel was first introduced publicly in May and became a favorable feature to many due to the layout and result display which basically get the work done for the user as far as relevant and related search results go. The fact that it’s a pre defined mind mapper which helps the user get all the related search results in a wheel shaped like display (similar to mind mapping softwares which are commonly used by many), gave users another reason to use it in addition to the features already provided by search engine giant Google.
Look to the left of anygoogle search and it's listed "wonderwheel" click it. if it doesn't show click the search tools and it comes out. Great tool but it is relavent terms in google.
Google Wonder Wheel is useful but I find Google Insights more useful... http://www.google.com/insights/search/ If you use a Google account to login you can get some pretty useful data. It's especially important to look at the rising searches and not just the top searches as there are many opportunities to be had there!