The Friends and Ignore List Extender is an add-on that you can buy for 899G1C or 719G1C with premium. It allows you to have more space to keep track of your friends, or if you have an incredible amount of players that you want to ignore.
Why would I want this?
Well, if you’ve got a sizable collection of friends, this might seem like a good purchase. If players are constantly verbally harassing you then this might seem like another solution, if you think the ~$10.00-$15.00 price tag is worth it (you could also just send screenshots to support to have them discipline the offending player).
If you’ve downloaded the game through steam, then you should know that you still have the option of just adding them onto your Steam’s friend list which costs nothing. (although the maximum amount of friends you can have on steam is around ~250, more if you level up and link your Facebook).