Thesedays, free informations is prevalent in many fields such as reserch , thesis in virtual system, it is very contraversial that how far the law or social acceptance should be allowed about this free writing. This writing will deal with both side of degree of acceptance, and weight copyright. The statement is as below. First of all, the demand of complicate thesis is fairly narrow, normally ordinary people do not approach to this thesis. Whenever people write report, thesis if they want to refer to former thesis,reserch the quotation is allowed, this enhances more qualified result than people do not refer to. It is hard to define the valuable document which is required to pay and many times we can find gems in the internet which is provided for free compared to creative work which seems valueness but charged. Meanwhile, a copyright for creative work is significant property however people tend to ignore this exertion. In reality we can easily find out the copy of books which ...