This cool video uses Twitter to plot the journey of travellers over a certain period of time.

These videos looks for tweets containing the phrases 'just landed in...' or 'just arrived in...'. Locations from these tweets are located using a location API tool. The home location for the traveling users are scraped from their Twitter pages. The system then plots these voyages over time.

Here it is after 61 hours:

Just Landed - 61 Hours from blprnt on Vimeo.

You can see different time periods on Jer Thorp's Vimeo page