It is not a really new web site but it is a new Name : Previous Name was "Viaduc"
The whole point of Viadeo is to help you contact people that you do not yet know, either by sending a request or an invitation to connect via people you already know. This is based on the networks of each member. For example, if Mr. Smith wants to get in touch with Mr. Stevens and both share a connection with Mr. Little, they will connect through Mr. Little. Mr. Smith will write an introduction message for Mr. Stevens and ask his direct connection, Mr. Little, to forward this to Mr. Stevens.