I have many doubts regarding YPN. Is Yahoo Publisher Network active in all countries, when i tried to register for it as an individual it is asking for a company name. Is that necessary to give company name and what is their payment process and want to know anyone used it, I am completely new to YPN. Clarify me please.
You are clearly new. YPN for small publishers died a long while back. They only want to do business with business... that have volumes of traffic. Ultimately it doesn't matter because Yahoo keeps shooting itself in the foot and will likely be acquired by someone in the next year. Microsoft is serving all their search results anyways.