From Fulldls:
This is a small metadata file. Metadata means that the file contains information about the data you want to download, not the data itself. Your BitTorrent client needs the .torrent file to connect to the tracker and download the data you want.
A seeder is a client that has a complete copy of the data of a certain torrent. Once your BitTorrent client finishes downloading, it will remain open until you click the Finish button or close it. This is known as being a seeder.
A leecher is a client that is currently downloading a torrent. Generally a leecher does not have the complete file, otherwise it would be called a seeder.
A server on the internet which acts to coordinate the actions of BitTorrent clients. When you open a torrent, your machine contacts the tracker and asks for a list of seeds and peers to connect to.
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What are ‘seeders’ and ‘leechers’ when searching Bit torrent files?
Why do they call them leechers?
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