Hi- If you can get links from network of sites that are under same "c" block Ips, Will you accept it or not ? I have read that they are useless as far as backlinks are considered.But is it that bad getting links from same c block Ips, is there any slight advantage to these links? Please shed some light... Thanks
I have read that they do not pass PR- I can't be sure about that, but I have found google doesn't count them in backlinks they show (in my experience). I think google has the ability, as a main domain registar, to check ownership of domains to see if they match. I believe even domains with the same whois currently still pass PR as long as they are on different "C" class. I have a have multiple hosts I use for this reason. I also keep copies of domains on these hosts so I can change the dns in case the host ever goes down for an extended period (which has happend). For low priced hosts, I am happy with asmallorange which has plans from $2.50 per month. Their plans allow unlimited domains and databases. I am also happy with PowerVPS. You might consider adding another host to get a different class "C" if this is a concern.
Having links from many sites in the same C-block means that they are of less value than links from many different C-blocks. It does not mean that they hurt you in any way. Make sure your own site is on another block and you should be fine.
Thanks everybody. Is there any penalization for having links from same "c" block Ips ? Or just simple devaluation ?
I would say that after the first link from any one c-block will be devalued, the more links the lesser the value of each new link.
I belive not, if a SE can penalize you for something you don't have control, it means you can penalize your competitors in the same way.
I think this is very much the case - most SEO's I know won't buy links from a network that doesn't have a widespread of IPs across a good number of non-sequential C classes (usually known as /24's in webhosting).
Thanks for the information! This means submitting to too many directories sharing same Ips is not worth at all.
Not true... They do pass PR as other normal link and they do appear on backlinks in Google, MSN and Yahoo!
That's not true. First, I know for a fact that google doesn't count them as back links in specific cases. I have PR5 sites on the same class "c" IP that do not show as backlinks or pass PR. These are links that have been up for over 5 years and I leave them to drive traffic from sites I own- not for passing PR. As soon as I moved one of the sites to a different host, it showed as a backlink on the subsequent update- for the first time in 5 years. Second, google mentions it in their patent. Third, take a look at text link brokers advertising multiple links for sale. You'll notice many times they mention the links are on different class "c" IP's because experienced webmasters know the benefit of this. It isn't too hard to figure out that the chances of a link from a site from the same host or IP is probably cross linking and defeats the intention of google to use a link as a "vote" for another site. Google also has the ability to check the registar information of a site, so perhaps if the ownership of both sites was entirely different, they will not devalue the link. The web is so large that google can't possibly catch every single link and there will be exceptions. We all know that google will ban a site that cloaks, uses hidden text, etc., but there are many examples of people who get away with it. I still wouldn't advise doing it because some people have gotten away with it. I also didn't say that this happens in all cases, I said I know for a fact it happens in certain cases because I have experienced it. I was also taking about google and didn't mention yahoo or msn. I don't know if you have read the abstract on the google patent, but it's pretty clear that devaluation of links by C class IP isn't just speculation - even if it isn't fully implemented - google appears to be heading in this direction.
I don't think there is a penalty for it. They just don't help you as much as different c's can. And from my experience with multiple sites on the same IP block and different C's have been more pages will get indexed on sites that have different C's then if they were in the same block. I'm not sure why, but it is a big difference that I have seen. Same C's sites I have seen only have 10-50 pages indexed. Move them to different C's and that jumps to 800-1000. Basically it starts getting all the pages instead of just a few.
That is new! Does this implies using shared hosting ( and interlinking, ofcourse ) for large sites is a big no no ? Regards, Tuning
Shared hosting is fine - just don't pile all of your sites onto a single IP and interlink them if you're determined to see good sustained results.
I should add that if you have your sites hosted at different websites then you should end up with a good natural distribution. I'm actually in the middle of compiling a lot of own reviews into a new site about webhosting, which will include information such as how many C classes each host has access to, as well as datacenter location, reliability, etc. More on that later, as it should be helpful.
Sites started on dedicated IP's switched to dedicated C's seem to make a difference. I'm guessing it really depends on what type of theme your sites have. If same theme or type of site it could make a difference. Best way to know is test out moving one site