Yea it will, its always risky to host all your sites on same server if you looking to create an web site Empire. Better split your sites on different hosting servers to be on safer side. Regards
You have to pay extra for each unique I.P address Try searching Google for 'Class C IP Hosting' it will cost you a little extra but there will be benefits
If You Have 200 Website on Same Hosting and you Give back Links On 200 website then Google Will count a single back Links From all website Its defiantly Effect very badly seo ...If You Make Link Wheel Of all that Website So forget to Get Pr From google...You can use C class Ip hosting Where you get each different Ip for Each Website
anyway we will not give any links from our sites.. but will do off page activities to get back links. IP will also affect for getting backlinks
Aslong as your not linking the site to each other should make no difference really aslong as there is not to much load on the server reducing load times, if your linking the sites together then yeah it will make a difference, but to be honest you should not be doing that anyway as its against Googles terms and you may find you get a penalty for linking your sites together to gain PR or SERP results. If they are on same ip atleast it dont look like your trying to trick google, if you have loads of sites on different ip's all linking each other and google findout dont think that will go down well to be honest.
This is similar to link building. If you were ever going to offer advertising on your website portfolio you would run into issues as webmaster want links from different C class IP addresses.
It is a bit risky, cause if one of your site gets a google penalty it may affect the other sites as well.
if you put google adsense on all your website the click rate will be very low,and google will not give you pr even though you are doing off page optimization.