A client of mine came to me with a unique question that I wasn't sure of the answer to.  He wanted to know that if he has a number of different websites (let's say 500 sites with their own domain name) on the same hosting package with the same IP, will that effect the SEO of the websites?  I figured it wouldn't due to the fact they have their own domain but I wasn't sure.  Another question, what if all 500 were on the same CMS and were all related in some way (category wise, let's say he's in the baking industry).  Their content will be different (about 60% different) across the board but have the same template (only right now, eventually there will be about ten possibly more).  Will that effect their SEO in any way (besides running the risk of duplicate content)?  Thank you very much!  I will try to follow up if anyone else has a question for me.
Does having same IP & some same content effect my SEO?
search engines;seo