During game play, you will encounter a great many like-minded friends for sure. You can just add them into your Friend List, and then you'll be able to check their status at any time, as well as talk with or send emails to them conveniently.
Of course, if you are bullied by someone during game play, you can choose to add him/her into your Enemy List. As the old saying goes, "Bills will always be paid!" From the Enemy List, you can easily check your enemies' status and locations, but you have to pay certain amounts of Dragon Coins for the tracking.