That's why I have a requirement for a message when it comes to my freebies group. Why would I give away pets to someone who can't even say, "Hi, I'm new, could I have this pet please?" - I mean, really?
I even had someone try to cheat my newbie system, once.

They were on an old account, asking for a gift for their "new friend" who was XXXXX person. So I canceled the trades they sent for the free pet and sent a message to this friend, nice and welcoming, with the invitation to browse my free pets group for a free pet. ....Didn't hear back from said friend, and haven't had any more trades from the initial trader, either.

My next annoyance is trade messages. >.> Forget chat speak. I'll never understand how people can type out full and complete words and somehow never manage to get a point across. It's like, hello, I can read your words but they don't make any sense in the order that they're in.

Now, I don't say anything to the individuals because there could be a language barrier, but typically, people tend to say, "Sorry my english is bad, I speak XXX language" when that's the case. Or, at least, that's been my experience.