Nsyght can be defined as a social aggregator that aims to let you maximize your every contact on the Social Web. It is not a substitute for other social networks.
Rather, it is a sort of optimizer that aggregates a user’s own social information along with information that comes from his each and every friend. And that is possible even when a friend is not a Nsyght user.
That is where the eventual strength of the site lies. Nobody is obliged to join and re-friend people that he already knows and follows – the communities a person is an active part of are automatically preserved, and as they grown in real life they grow in Nsyght minute by minute.
Some of the sites that are already supported include Twitter, Facebook, Digg, Vimeo and Flickr. That is a representative enough number of services, and chances are if you interact socially online it will be through one of these. Hence, Nsyght will be instantly usable. And once you are in, the provided filters and refinement labels will let you focus your attention only on these parts of your stream that really appertain to you.
Nsyght.com In Their Own Words
“Nsyght helps you discover and share things posted by your friends.”
Why Nsyght.com It Might Be A Killer
It makes maximizing your social contacts and getting to know other people an effortless and accurate task.
Some Questions About Nsyght.com
If you have multiple Twitter accounts, can you have them consolidated into a single stream? 
