Hi there.

 Throw It Forward is for US (some exceptions) yoyoers that want to participate in a traveling mystery swap box. The cost is that of shipping plus a yoyo to trade and some gifts for the next recipient. 

ThrowitForward is also a concept the thrives in the yoyoing community about giving what you can to others. Maybe it's sending someone some string or a yoyo for free. Or helping with trick tips. It is this concept that makes the yoyo the best community I have ever belonged to.