The Friends Suggestor plugin allows users to suggest their current friends to other friends. Users will receive a notification about suggestions received by their friends. All users suggested will be disaplyed on the What's New page. From there users can either accept the suggestions by sending a friendship invitation or reject them. 

Demo:

http://www.webhiveteam.com/demo/user_home.php

login: socialengine2@webhive.com.ua

password: password