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As far as how to tell if you've been hijacked, I've asked that many times here and never got a reply. I don't know if you mean how to tell from a URL if you've been hijacked, or how to find any websites that may be doing it.
If the former, you can right click and "Copy shortcut" for any of your links you find appearing on other's pages and paste that URL in the box here: [webmasterworld.com...] If is says "302", it's a hijack and worth investigating further and could turn out to be the bad kind. Of course if you "paste" the URL and all you see is www.yourdomain.com then it's not a hijack, the hijacks are usually URL's like
www.otherdomain.com?www.yourdomain.com or www.otherdomain.com/klsdjflksdjk/lsljd4562154/blah-blah?=www.yourdomain.com and similar.
If the latter, I'm not sure. What I've done is do a link:www.yourdomain.com into Yahoo then you just have to check all hundreds, thousands, or how ever many results you see to check your links on the pages. You may need the http:// prefix in Yahoo.
For instance, does this count at as a hijack? It shows a 302. I've replaced stuff in this URL, but I'm sure you can find instances:
[topic].about.com/gi/dynamic/offsite.htm?zi=1/XJ&sdn=[topic]&zu=[URL to internal page at my site]
I did a G search for a string of text found in one of my pages and which is used as a link to other pages. We can forget about that original page ("Page B"), since it probably doesn' matter in the following.
I found a supplemental entry in the G SERPs with the same title and excerpt text as one of the pages that Page B links to. Let's call that Page A.
The given link is to: domain.com/visit.php?id=[a number]
That does a 302 to Page A.
There site appears semi-legit, but I get the idea it was just scraped together. The page containing the redirect link to Page A only has a little of my text, and it has a different title. In fact, it's just about one of the items offered at Page A. It also shows 119 hits through that redirect script, but I haven't verified that.
So, I would prefer to keep this as it is, but if this is causing 302 problems I'll try to remove it.
What should I do here?
1. Search in Google for allinurl:www.mysite.com
2. Look for any listings that are not your site but have the exact title as your site.
3. View the Google cache to see if it looks just like your site.
Then, use a header tool to see if the URL shown in the SERPS returns a 302.
So, is this still accurate, and does this method bring up false positives or not show all the possible hijacks?
As I described in Message #30 here:
My highest PR page has dropped from a 6 to a 3. And, I'm pretty sure I still saw it at a 6 at most a month ago. Yet, today it's a 3.
I've got three main pages at that site, and all have lost PR.
However, for the less well-known pages that still have good links, it seems like their PR is more in line with the links although I don't know what it was before.
[edited by: engine at 5:13 pm (utc) on July 15, 2005]
According to googleguy this is not accurate.
I'm the poster originally known as "Blogger", now with a brand new name.
While it might not be clear, the first part of my last reply was actually something I found on someone else's web site, and it was written last year, so I was just passing that along.
I'd still like to know what is and isn't a safe redirect and a step-by-step method to definitively spot potential hijacks.