June 8th, 2011 
admin 
Some websites report a “not found” error by returning a standard web page with a “200 OK” response code; this is known as a soft 404
. Soft 404s are problematic for automated methods of discovering whether a link is broken. local seo services . boston it consulting . Some search engines, like Yahoo, use automated
processes to detect soft 404s.[2] Soft 404s can occur as a result of configuration errors when using certain HTTP server software, for example
with the Apache software, when an Error Document 404 (specified in a .htaccess file) is specified as an absolute path (e.g. http://example.com/error.html) rather than a relative path (/error.html).[3]
Some proxy servers generate a 404 error when the remote host is not present, rather than returning the correct 500-range code when errors such as hostname
resolution failures or refused TCP connections prevent the proxy server from satisfying the request. MLM Help . This can confuse programs that expect and act on specific
responses, as they can no longer easily distinguish between an absent web server and a missing web page on a web server that is present.
In July 2004, the UK telecom provider BT Group deployed the Cleanfeed content blocking system, which returns a 404 error to any request for content identified
as potentially illegal by the Internet Watch Foundation.[4] Other ISPs return a HTTP 403 “forbidden” error in the same circumstances.[5]
The practice of employing fake 404 errors as a means to conceal censorship has also been reported in Thailand[6] and Tunisia.[7] In Tunisia,
where censorship is reportedly severe, people have become aware of the nature of the fake 404 errors and have created an imaginary character
named “Ammar 404″ who represents “the invisible censor”.[8]
The page cannot be found 404-
.
- “The page cannot be found”
- “Error 404: NOT FOUND”
- “HTTP 404 – File not found”
- “Not Found”
The 404 Not Found error displays inside the Internet browser window, just as web pages do.
Cause
The 404 Not Found error is an HTTP status code that means that the page you were trying to reach could not be found on the web site’s server.
Posted in 
Tags: 
Great job on this article. I like your viewpoints and I agree on a lot of your content. Thank you very much for sharing this.
I’m going to be honest with you here. Informational content usually puts me to sleep, and I snore quite loudly. Your content not only kept me awake, it intrigued me.
I appreciate your writing talent and your uncanny ability to make clear, concise points. I agree with a lot of your unique views. Thank you.
I wonder why other writers don’t write this kind of article in easier to understand language like you. Thank you for writing this great article.
I like your content a lot. I feel a little intimidated writing here since you’re such a good writer. I didn’t want to go without thanking you for this information.
It has always been my belief that good writing like this takes research and talent. It’s very apparent you have done your homework. Great job!
It is sometimes difficult to find good articles online, but your material is awesome. I found this easy to understand content that is formatted in an easy to read way.
It’s not often I take some new information away from reading an informational article. I’m sure that’s because most writers tend to write the same thing over and over. You have presented new, fresh ideas.
Great informational article! I have to thank you for making this available. I like your point of view and how engaging your article is written.
Many times I have to figure out what the writers is trying to say in their articles. There’s no doubt about your article. It’s great!
I read through your article with much interest and thought. I am impressed with your writing style and presentation of viewpoints. Thanks for sharing it.