Handy searches that can be performed in the addressbar
Type "acronym <acronym>" to look up what an acronym stands for in Acronym Finder. For example, "acronym WTF."
Type "amazon <product name>" to look up an item on Amazon.
Type "dict <word>" in the addressbar to perform a dictionary look-up.
Type "ebay <item>" to find something up for auction at Ebay.
Type "flickr <search term>" to search all the tags, titles and descriptions of images at photo-sharing site Flickr.
Type "froogle <product name>" to look up a product on shopping search engine Froogle.
Type "map <address>" to get a Google map of a street address or location.
Type "image <search term>" to find images that match using Google Image Search.
Type "goto <term>" in the addressbar to visit Google's top listing for that term
Type "lh <search term>" to search Lifehacker for information.
Type "quot <symbol>" in the addressbar to perform a stock symbol look-up
Type "technorati <search term>" to see what weblogs are posting about a topic.
Type "thes <word>" to find words with similar meanings in a thesaurus.
Type "slang <expression>" to look up a slang expression in Urban Dictionary.
Type "wikiped <person|place|thing>" to look it up in collaboratively-edited encyclopedia Wikipedia.
Yahoo! Creative Commons Quick Search
Type "cc <word>" to find Creative Commons-licensed items available for reuse with Yahoo!'s CC search.
Type "local <business>" to find a business listing with Yahoo! Local.