Data is hidden in various social network information streams – Facebook & Twitter updates in particular
People share a lot of information in their tweets – some of it shared intentionally, and some of it which could be uncovered with some rudimentary searching. It is possible to extract travel information from people’s public Twitter streams by searching for the term ‘Just landed in…’.
The idea is simple: Find tweets that contain this phrase, parse out the location they’d just landed in, along with the home location they list on their Twitter profile, and use this to map out travel in the Twittersphere. Twitter’s search API gives us an easy way to get a list of tweets containing the phrase.