<p> Many social networks allow users to expose geo-locational data. For example, Twitter allows each tweet to be tagged with the GPS location of the user. While perhaps harmless individually, once aggregated, these geo-tagged tweets can be used to build a profile of the user, revealing far more personal information than intended. A tool that aggregates tweets and helps visualize and classify where people are tweeting from will be demonstrated and the implications discussed. </p>
<p> <strong> Paul V </strong> is a grad student in Toronto trying to figure out why people geo-tag tweets, what they get out of it, and what the risks are. </p>