Dedicated IP hosting and search engines

There has been debate in the SEO industry for awhile regarding whether or not using a dedicated IP address is better than having a shared IP for your website…

Most probably, these fears are greatly exaggerated. Since the majority of sites on the Web are hosted via shared IP, it would be unprofitable to search engines to penalize a site based on IP. Search engines are able to ban anything on a domain name instead of an entire IP neighborhood. So it is search engine safe to use a shared IP hosting. Moreover, almost all hosting will eventually be shared in order to preserve IP addresses.

from buildwebsite4u.com