If so, have you had any problems with them? Would you recommend sponsoring a child through them?
I've check out both sites (Foster Parents Plan is just the Canadian version of Plan) and it seems like a promising charity. The Foster Parents Plan website says that they work on long-term solutions, they consult with the families receiving the charity, and they publish an annual report on where the donated money goes. All very important criteria for an international charity for the poor, in my books.