I am currently working for one of my clients who has been operating three online businesses in the past which are more or less related to each other. Now, he wants to connect all the three online business together so that he could get better results. He is need of a domain which has nothing built three categories for each of his business. I doubt that Google is going to penalize the website once I accomplish his goals. There have been cases in the past where multiples sites were grouped into a single one and I don’t want to face any kind of trouble. Please help me out.