As everyone else has stated, yes, get a keyboard. FC mates of mine who do not have a keyboard hooked up to their playstation really suffer trying to pick out each letter on the screen with the controller. :/ In my FC too, if a member does not interact with anyone else in chat, they stay in the lowest, most restricted rank. :/

I will add though that the wireless usb keyboard I'd used with my ps3 is spazzing out with my ps4. No idea why. I replaced the batteries just in case but sometimes it is sluggish and then duplicates letters. :/