1. When the players on the transfer list is very large, they only show a certain amount of players. If you refresh your computer (I dont play on mobile) you will sometimes get a different transfer list.
2. It prevents someone from having 100 friends all send them skill points. You can only get 1 gift type per day no matter how many people send you the gifts
3. I think this is a good idea, but they would have to monitor it to prevent foul language, and also how would players of different languages converse?