Sentence:  One of the most used features of MySpace is the practice that is nicknamed "friending." If you "<WSD>friend</WSD>" someone, then that person is added to your MySpace friends list, and you are added to their friends list. 
Meaning of the word marked with <WSD> tags:  To add (a person) to a list of friends on a social networking site; to officially designate (someone) as a friend.