Google IP Indexing…

I have noticed this lately but don’t really know whats up – any ideas from the community… The example below is Dictionary.com being indexed by its IP. While it does not appear to be affecting the rankings, it is certainly interesting that this has occured. What would cause Google to show your IP rather than your domain name? Do we need to start writing redirects from IPs to domains as well? So, to all 7 people who actually read this blog with any regularity, what do you think about it? Any SEO implications, or does it not really matter for search engine optimization. No tags for this post.