It is a scam! First you receive a note saying that someone has sent you a virtual gift, then it induces you to send gifts to other members. There is never a response from other members... It is alwyas the same 5 or so people that constantly write to you sending small gifts and asking others in return.
With few exeptions, gifts are purchased etc... I have not had a good experience with these people... I am surprised they are afiliated to facebook.
Sincerely Ely