The member profile shows useful contact information and statistics for the member you are viewing. This includes average topics/replies per day, as well as total topics/replies. Depending on what the user has entered, this will also display contact information (eg Instant Messenging usernames) including email, the location of the member, time zone, user signature, and user personal title.
The information is entered by each user in their UserCP/Personal Control Panel. They can choose what information they would like other members to see.