You don't have to, but people don't like leeches, it's considered polite to seed (when you have 100%) a while. Also, within limits, increasing upload usually increases download speed.
You don't. If you don't upload then don't download.
Yes. There are two principles involved. 1. The more upload your uTorrent gives out, the more download it will receive back from other peers. 2. If upload in uTorrent is set too high, or to unlimited, download speeds will suffer as needed communications (resend requests, acknowledgment signals etc.) will not be able to get through. The general rule is to cap upload in uTorrent to 80% of the upload capacity of your internet connection. This will give out maximum upload while leaving room for the communications. Optimizing uTorrent for Speed http://www.techsupportalert.com/content/optimizing-torrent-speed.htm
uTorrent and other BitTorrent clients are a type of Peer2Peer (P2P) file sharing system. Like all P2P file sharing systems, one computer must upload so that another computer can download. BitTorrent clients, such as uTorrent, will not let you download from other clients if you do not upload back to them.In short, yes. The files you download are uploaded to other people who are trying to download the same file. Only the things you download are uploaded. uTorrent does not share personal files such as your "My Documents". uTorrent does share anything you download through uTorrent. If you do not share your downloaded torrent files with other users, other users will not want to upload to you.
To download movies, music and any other files from Download-zzz.com you need to install a BitTorrent client, like uTorrent. And also have working torrent file
That is not the "connection type" that the uTorrent speed guide is referring to. That is the speed of your LAN, not your internet connection. The 'Connection type" on the speed guide is based upon the upload speed of your internet connection. What the Speed Guide basically does is cap your upload in uTorrent so outgoing communications have room to get out. It also modifies some other settings to distribute your upload to get the most download back. I found this guide to be better: Optimizing µTorrent for Speed http://www.techsupportalert.com/content/optimizing-torrent-speed.htm
You need OS X 10.5 or later to install uTorrent.
You need a client such as Utorrent to download the file
To return your uTorrent to default settings, two files must be removed from the uTorrent Application Data folder.Close uTorrentIn Windows, to access the folder, click Start>Run and type %AppData%Then delete, Setttings.dat and Settings.dat.oldStart uTorrent and it will be returned to its default settings.There are settings in uTorrent which should be changed in order to get good download speed. These changes are based upon the upload capacity of your internet connection.There is information here to help with that:Optimizing µTorrent For Speedhttp://www.techsupportalert.com/content/optimizing-torrent-speed.htm
To set up seeding in uTorrent, first ensure that you have completed downloading a torrent file. Once the download is finished, leave uTorrent running to allow it to seed, which means uploading the file to other users. You can adjust your seeding settings by going to Preferences > Bandwidth to set upload limits or by selecting a specific torrent and right-clicking to prioritize it for seeding. To maximize your contribution, keep uTorrent open and your internet connection active.
If uTorrent says "bandwidth failed," first check your internet connection to ensure it's stable. Next, go to the uTorrent settings by clicking on "Options" and then "Preferences." Under the "Bandwidth" tab, ensure that the maximum upload and download rates are set to reasonable values (e.g., 0 for unlimited) and that the "Enable bandwidth management" option is checked. Additionally, check your firewall and antivirus settings to ensure they are not blocking uTorrent's access to the internet.
How to configure µTorrent properly depends on the upload capacity of your internet connection. To set up µTorrent for best possible download speeds, see the link below.
Turn of any other application your might be uploading usage. Try another free port. Best option, get a better internet service.