Abstract : Social networks sites (SNS) allow us to catalogue human beings. This world catalogue of digital identities that search engines can crawl and index, raises the problem of human being profiles relevance. Those social networks sites and search engines indexing public informations but also private or intimate data can easily track our intentions, our social relationships. They have a very deep understanding of what the sum of our online documents reveals of us. After the arrival of an merchant indexation (sponsored links), after social and collaborative indexation (folksonomies), it is today necessary to question the process that makes human beings the center of documentary cycle, as simple documents ... among others.