SEO: Does Google Know IP's?

[razz5900]

I know that Google has a software that checks to see who owns what domain name. They can see if you own four(4) websites that are the same- example if you own 4 sites relating to art work.

However, can Google check to see if the same IP is link building? Example: someone hired me to bost 200 blog comments that relate to their website theme. If I post 200 blog comments from my same IP, would Google know this? If yes, would my client has his website banned? Or would my IP be banned from Google? If yes to all these questions, how would it be best to use a different IP address for each blog comment?

[Leslie K]

Yes. Google will know this. Google looks for "quality" links as well as "quantity" links. So 200 comments on the same website TO the same page on your new website won't count for much PR value if they all come from you.

If you want to boost your PR value you need to have links on "multiple" websites pointing at you. This is the "quality" part. Remember, some of it's a popularity contest. The more websites pointing at you (and the higher THEIR PR value) the more popular you are and the more chance you have to move up on the google searches under your keywords.

[IMarketing101]

Yes Google knows your IPs. There's a lot of debate as to how having links from the same IP affect SEO. For example:

I have about 100 domains. All of them in the same host, all of them in the same IP. If I link between them, how will Google evaluate this. I've seen experts (gurus) taking both sides of this argument.

How I combat this? I focus on relevancy! I only link when it's relevant. I focus on building website for People 1st and for Search engines 2nd... I've found search engines don't buy from my sites often enough...