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The fact that WMT sometimes crosses titles on domain names that share an IP is a bit disturbing - it makes you wonder how the data is getting crossed up and if there is an effect on your rankings. Still, I have only seen this happen rarely, and when I did there usually was a DNS problem.
So I'd suggest that you not take your host's word - do some DNS checking of your own, using one of the tools that are available on the web, free or paid.
I just realized that you have another thread [webmasterworld.com] that describes the same problem with site: operator results. I'd say most definitely do your own DNS check.
I have lost my home page from Google - all the others on the site are still indexed. When I search on
allinurl:mysite I get all the symptoms of a 302 redirect from another site, which in turn appears to be subject to another 302 redirect from a third site.
The title, snippet and cache of the search result all belong to another site, though a click on the title takes me to my site, and the URL displayed is mysite. This developed about a week ago.
As I understand it, this is how Google handles the 302 after the Big Daddy Update, ie it displays the page content & URL of the site at the "end" of the temporary redirect.
Unfortunately when I use a header checker, I find no evidence of any 302 redirects. Having spent a lot of the afternoon reading the "302" redirect/hijacking threads from 2005 in WW, I'm left wondering - is this still a way someone could smash my site out of the search results, and (how) can I tell if they have hidden a 302 apart from what appears in the allinurl: or site: searches?
Any advice very gratefully received!
I also note a lot of other members are reporting loss of home pages in another thread, but that does not seem to be 302 related...
BTW my webhost are adamant it isn't a DNS problem, and from what I have seen, that appears to be true - although all three sites involved are hosted on the same company (different servers, though, and my site has a unique IP address).
[edited by: tedster at 8:06 pm (utc) on Oct. 31, 2008]
[edit reason] moved from another location [/edit]