Online address book Plaxo is prepping the final details of its social networking functionalities, reports TechCrunch.

Turning Plaxo into a social network would bring it into closer competition with LinkedIn.

The two are primarily focused on the professional crowd, which uses the services primarily to manage contacts and relationships.
Plaxo has caused a few headaches among people over the last few years. The site is infamous for sending people prompts to update their information, alerts which, when abused, makes the site feel spammy.

This alone could damage its chances of becoming a standard in the social networking space.