Wolfram Alpha have come up with a new way for you to use their search engine: widgets. I'll let them explain:
The beta version of Wolfram|Alpha Widgets is here! What are Wolfram|Alpha Widgets? They’re free, Wolfram|Alpha-powered mini apps that are easy to make, customize, and share on your blog, website, and social networks. And they’re the next step toward our goal of making the vast knowledge and computational power of Wolfram|Alpha available to everyone, everywhere.
Widgets are a new and personal way to experience Wolfram|Alpha. Want to have an Wolfram|Alpha-powered app on your blog that calculates the adult height and weight of a child based on his or her current stats? Or how about an app that compares the financial data of two public companies? Want to create a customized nutritional label for any recipe you have? Calculate integrals on the fly? Or locate an object in the sky? The possibilities are limitless. For more examples of widgets, see the hundreds already in the Widget Gallery. You can freely take any of these widgets and put them on your own site as is or customize them any way you wish.