Anttenna is a free iPhone app that is on its way to reinventing traditional classifieds. With "microlistings" (a Twitter-like post of 140 characters or less), users are able to find and sell whatever they want on Anttenna in accordance to their location. The people behind Anttenna have also enabled instantaneous user-to-user communication, again modeled after Twitter.
As a way to match supply and demand, Anttenna’s listings can be sorted by keywords, categories, location and/or proximity.
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Comical Classified Ads
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Real-Life Classifieds Reenactments