Xippee is a browser add-in that helps you refine your search on most search engines like Google, yahoo, amazon etc. All you got to do is just double click any word from the search results and choose to add or remove that word from the query. The addition or removal of the word has to be done through the PLUS or MINUS buttons provided by Xippee. Xippee will also refresh your search results automatically. This add-in is available for all major browsers like IE, Firefox, Safari and opera. You and watch a Xippee demo download it from here.