When a student writes a dissertation, research paper, or essay, one of the main problems they face is proofreading them. If a student wants to obtain a fine mark on his paper than additional effort has to be made to create a good quality written paper. Generally when you are writing a dissertation, you will have strict deadlines to follow. When you concentrate on a good quality output for your research, you may tend to miss out on some grammatical or spelling errors. For situations like this, a proofreading service provided by professional proofreaders comes in useful.