The following is a list of the various contract types that are issued, reviewed, and negotiated by Office of Research*, with brief descriptions of the most common contract vehicles we process. Amendment / Modification. A contractual award document that modifies any aspect of an existing award.
All users who have the torrent open make up what is called a swarm. Technically, a seeder is someone who has 100-percent of the pieces that make up the torrent. Initially, the first few leachers within a swarm feed off the seeder.The more seeders the faster the download will go.    Leechers are people who has a negative effect on  the swarm of the torrent. Leechers are commonly the users who  download much than they upload.
A seeder is a piece of equipment that we use to put seeds in the ground. Planting seeds is usually the third step. There are various types and sizes of seeders. I know that on the farm that I will be working on they have just a small seeder, mainly because it is a small family run farm. There are many different types of seeders out there today.