Sliink is a way of sharing stuff with your friends. You can easily share links, images, videos, files, and more with all of your friends with a single click. When your friends receive something from you, if they love it they can pass it on to all of their friends, if they hate it they can chuck it and let it die with them.
The idea is that good ideas will spread and bad ideas will die. Those who share good ideas are rewarded and those who share bad ideas are punished. This makes everyone socially responsible for what they share, and what they pass on to their friends.
No one is more qualified to know what you'll like and dislike more than your friends are. Basically your friends become your own personal news editors, letting through things they know you'll like, and removing things they know you'll hate. In return you perform the same functionality for your friends.
No. Those others sites filter content by popular vote. Everyone votes on what they like or dislike, and majority wins. While that may work for some people, it doens't work for the rest of us who aren't interested in what the majority thinks. With Sliink things only get shared with you by your friends, friends of your friends, and so on. That means that its targeted, its ideas and information that are meaningful to you, topics that you care about.
As history has shown, popular voting is easy to cheat allowing a few power users to push their ideas upon everyone else. Cheating on Sliink is very difficult because information never filters down to you unless your friends are willing to put their reputation on the line and vouch for it. This makes spamming almost impossible since the spammers will only be able to spam their own friends.
Sliink is a take on the childhood game of pass it on where you whisper a secret into a friend's ear and tell them, "PSST! pass it on...". They then tell someone else, who tells someone else, and so on.