Dopplr.com, a site for those who love to travel, was created after a few friends kept having “trouble coordinating times to meet during their travels.” In addition to cataloguing meetings, the site helps jet-setters organize itineraries and calculate their carbon footprints.
Mon.thly.info, designed to help women keep track of their menstrual cycles, is all about practicality. The site sends alerts, so women can be prepared for their period or plan to get pregnant.
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