New round of development of file exchange networks was emergence of torrent trackers (torrent-tracker) by means of which users could exchange files from each other computers, using the special programs called a torrent clients. Users in this process can be sida or licha. Once you understand who are they, and in what their differences.
Sida
Cyd (or a sider) is called the user of the tracker which possesses 100% of the electronic information assigned to a certain torrent. It is possible to become Cyd in two ways. The first (classical) is to download all volume of data attached to distribution at a torrent tracker. - to become the second the author of distribution and to be, in a sense, a parent of all future sid which will download data on a torrent. The second way is rather labor-consuming and requires knowledge of all rules of editing distributions which is individual for each torrent tracker. Besides it is impossible to forget about copyright as a set of movies or programs are protected by the relevant law therefore creation of distribution with similar content can entail criminal liability.
Treat
Leitch (or a licher) is called the user of a torrent tracker which downloaded only a part of information, the corresponding certain distribution. Having downloaded 100% of information, he will become Cyd, however he can distribute information on this torrent and being Leitch as torrent trackers at the heart of the technology allow to share the fragments of data lacking each other between licha.
Quality torrent distributions
Sida also treat, being the only participants of exchange of information at torrent trackers, define quality of distribution. It varies from 0 to 1 (above - it is rare, but it is possible). If the quantity of sid and lichy matches, then the quality is equal to 1. If it is less, then and the quality is less than unit. Sidov can be much bigger, than lichy when distribution is extremely popular. For a short period the licher becomes a sider and begins distribution on domino effect. As soon as the rush falls down, the quality of distribution begins to fluctuate around 1 or slightly less.
The more the LED, the higher it distributed to information rating. By analogy with quality of a torrent if the LED swings less, than distributes, then its rating more than 1 and vice versa. Many torrent trackers encourage users with high rating, giving them any material prizes or the user privileges (right of moderating of data, administrations, delivery of the paid positions, etc.).
All this led to the fact that many users began to wind the rating, artificially overestimating amount of the transferred data on different distributions. Wrapping, as a rule, is punishable by rules of torrent trackers and is punished by the ban.