Search facilities to help communicate with others out there

Facebook search facility allows you to search within the entire website. Then also to do diverse search via someone's email address or then their own name and it comes up with possibilities matching as close as possible to your criteria, or with the email is more specific and you have to log in to your own personal email and it then send requests to your whole address book to then find people.

Facebook is very clever is multi connecting its system up with the email services and then also in the bottom right it connects to various instant messaging programs, whereby you do the same as with your email. import your entire friends list from your previous instant messaging service as you want everyone you previously communicated with via email, Im or otherwise to chat to now on facebook. clever tactic to enroll the millions of now current user. Im pretty sure its the most used interface at the moment