than do you?---> wrong sentence construction here
then simply answer if you know him or not, and how do you gauge the fact that you are more knowledgeable? it's a different context from one case to another and I think I know enough not to do anything yet right?
don't be such an arse, I am asking because I have to do something, you don't know just why I'm asking so just answer it simply.
he's an essay company owner, I'm doing a background check on him. It seems that some people here know who are the owners of different writing companies.