Plaxo has relaunched its ‘smart address book’ service, which lets users share data between address and calendar programs from Microsoft, Google, AOL and others.

Plaxo 3.0, in addition to simplifying the synchronisation process, is now available in in seven languages, including French, German, Japanese, Portuguese, Simplified Chinese, and Spanish.

Plaxo 3.0 has also added a social network element, Plaxo Pulse, allowing people to share content and feeds with other users. If your contacts post content online it will show up on your profile.

These RSS feeds will include Flickr photos, Amazon wishlists, blog posts, and changes in contact details.

Essentially, Plaxo allows users to link up the various data they have across address programs, mobiles and other online accounts, and share them with friends and contacts.

A WAP 2.0 version of Plaxo for mobile browsers has also been launched.

The basic Plaxo service is free to use, though a premium version is available for $49.95 (£25). The premium version offers features such as data recovery and removal of duplicate contacts, as well as improved support and mobile access.