Comment 2 for bug 510535

Another approach could would be to write a catch-all datasource based on Tracker's file change notifications: http://live.gnome.org/Tracker/Documentation/SignalsOnChanges.

The drawback here is that Tracker reacts to any file change, including the ones generated by the system. Monitoring the recently used files only gives us the files that are actually used by the user. In other words - Tracker notifications might give a lot of noise - but honestly I don't know if it's abig deal in practice.