Ian Hipwell - 2009-01-05

I'm relatively new to torrent files and I've been using Torrent Swapper for a few weeks.
I'd like to contribute to the number of files in circulation. This is going to sound like a elementary question but, after a file has completed and the BT status shows it as seeding, do I need to leave it open in the Torrent Swapper window for it to be available to others?