Why?

             Why should links be shorten ? 

Some links may be lengthy and is convenient to use the abbreviation, if you want to twitter to post a link is beneficial to shorten because the tweet is limited to 140 characters, so you need to leave enough space for comment or RT. In addition, you can monitor and statistics ie. You can see how many times someone clicked on your shortened link, but you need to register at one of the service to shorten links. 

              Where can links be shorten ? 

1. In the first place I'm going to put the home site skrati.net I encountered relatively recently. The site is very good because it gives you the opportunity to choose the name of the shortened link, and it takes the form http://skrati.net/adresa. 

The site provides the ability to protect and address, by entering a code so that any attempt to access that link would be impossible without these codes. This offers the possibility that only people who have the password can access the link. 

2. Another site where you can shorten the link goo.gl. Simply enter the address you want to shorten and click "shorten". 

3. Here I will mention another site, and it's bitly.com . This site is quite often used to shorten the procedure is the same as in the previous cases. 

If anyone reads this I hope it will benefit you;)