link pop and ip addresses

getting marked down?

[mr_dredd2]

I have heard rumours that google now marks down links coming from the same c class ip address (where only the last 3 numbers change).

Has anyone heard anything about this? this would certainly lower the value of subdomains and "link galaxies"..

anyone??

[agerhart]

what is your source for this information? Reliabel or rumour?

[Mike_Mackin]

>Reliabel or rumour?
imho, it doesn't matter NOW
Google reads here.

[TallTroll]

This cant be right, surely? CIDR was developed to allow sharing of classful IP address blocks. If your site happens to be hosted on a machine within a given Class C block, and there are links to it from sites on machines within the same block, you can no longer say for sure that the owners of those machines have anything to do with each other. They need not even be in the same country, theoretically

I am fairly sure that every ISP is required to support CIDR now, so wouldnt it be unfair to apply a penalty to links due solely to an accident of hosting which may not be apparent?

Not that I'm saying it is IMPOSSIBLE for this to happen, just unfair

[mark_roach]

This one was a subject that got brought up a number of times on Saturday. And after the results of the most recent google update, I think it might just do :(

IP swap anybody ?
You host me, I'll host you :)

[heini]

The corporate level link farms have done very well on this update, (Google is still changing in the categories I follow). By corporate, I mean a group of 50 sites, all on the same host and extensively interlinked. Each site has at least 10 links on separate pages to the index page on each site in the group. Each one of these sites is targeting this loop hole in Googles algo, "These terms only appear in links pointing to this page". The worst offender has 2400 inbound links from the group", and the anchor text is the same on the fifty I checked.

posted by startup in the discussion on the ranking changes from July 7th [webmasterworld.com]

[bigjohnt]

I think the folks at Google are sharp enough to figure this out. I would imagine an inordinate number of links from the same IP block would red flag the site for a human review, just as a huge jump in links on back to back indexes would sniff out link farm "cheaters".
I'm not worried about shared IP's effects. I, personally would just count the shared IP links as "internal" versus external and weight them differently - that should be a simple task.