SuperCoach players will be ranked based on overall points against their participating Facebook contacts.

Polar Rose had a service that allows users to name people in their photos on photo sharing sites like Flickr and 23hq.com using their Facebook contacts.

There are features I'd like to see added down the line-the ability to directly initiate a call with a Facebook contact from the Skype client, for example, and similar integration with Windows Live Messenger-but the core functionality is what's most important, and that works well.

In April 2011, Jajah introduced a VoIP application for Android phones that can be used with Facebook contacts.

For example, you can see your Facebook contacts in the Sense address book and access your own Flickr images directly from the Sense image gallery viewer.

When first starting out on social search, Microsoft wondered whether a query could give better results if one's Facebook contacts were part of the experience.

Osterloh also said that integrations with Microsoft's Xbox and Windows 8 technology would be made available in due course, and that the company was working on integrating Facebook contacts into the main Skype interface.

Both seek to break down the walls between data silos-you shouldn't have to consider whether a contact is a Windows Live contact, or a Facebook contact, or an Exchange contact, they should just be a contact, and treated uniformly.

At this time, however, there is no official way to import Facebook contacts into Google+; but there are some workarounds to achieve it.

One of their more well-known projects is the sale of their mailing list or 'luckypages,' which is a directory of all of their email and Facebook contacts still on sale for 249.99 GBP.