Simply type (or copy- paste from your browser's address bar) the URL which you'd like to make smaller into the text box on the main page. Push the "Make it Short & Evil" button, and Ni2.iN will make the address smaller and eviler ifor you, and give you a new link. You can then copy this new URL wherever you'd like to use it.
There is no need to visit Ni2.iN to use a shortened address. Simply type or paste the shortened URL into your browser's address bar and press enter, you will be automatically forwarded to the original address. If somebody has given you an Ni2.iN URL in the form of a hyperlink, just click on the link instead.
It's very easy to find out where any Ni2.iN shortened address will take you without having to visit it. This is useful to check that the link will redirect to a destination you trust. Simply add a hyphen (dash) to the end of the shortened URL, and instead of being redirected to the original long address automatically, you'll be taken to a preview page telling you where the link goes.
For example: You have been given the shortened link http://ni2.in/b and want to check where it goes. Copy-paste it into your browser's address bar and then add a hyphen, making the link http://ni2.in/b-. Now simply visit that address, and instead of being taken directly to the original URL, you'll be taken to a preview page on the Ni2.iN site which will tell you the link's destination.
If you need to use Ni2.iN frequently for evil things, you can bookmark this special link: Shorten with Ni2.iN. Visiting the bookmark will then create a shortened URL for the site you are currently visiting, without you having to visit Ni2.iN. This functionality requires Javascript to be turned on in your browser (usually on by default), and you can safely ignore any security warnings that pop up when adding the bookmark, these are because the link contains Javascript code.
How to do that ? Bascially, Bookmark this Link (right click on it and click on "Bookmark this location" or "Add to Favorites"). Now whenever you are on a URL/Website that you want to shorten, just click on this bookmark and it will be shortened for you ! Easy as 1 - 2 - 3 !