Yahoo's crush on location-based offerings appears to be building steam. A day after announcing a new mapping alliance with Nokia, Yahoo said it has acquired Asian location-based service Koprol. Based in Jakarta, Indonesia, Koprol is similar to U.S. mobile startup Foursquare - another company Yahoo reportedly wants to buy - in that it lets users broadcast their location and share information about real world locations using a system of "check-ins" on their mobile phones. Unlike Foursquare, Koprol uses mobile phone browsers - not dedicated apps. 
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