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Link Equity Transfer: Search engines typically transfer a majority of the link equity (or “link juice”) from the source URL to the target URL for 301 redirects. [ 6 ] Indexing Delays : There might be a lag before search engines recognize the redirect and update their indexes accordingly.
If a server is configured to support server-side scripting, the list will usually include entries allowing dynamic content to be used as the index page (e.g. index.cgi, index.pl, index.php, index.shtml, index.jsp, default.asp) even though it may be more appropriate to still specify the HTML output (index.html.php or index.html.aspx), as this ...
There are a variety of ways in which Wikipedia attempts to control search engine indexing, commonly termed "noindexing" on Wikipedia. The default behavior is that articles older than 90 days are indexed. All of the methods rely on using the noindex HTML meta tag, which tells search engines not to index certain pages. Respecting the tag ...
For example, HTML documents contain HTML tags, which specify formatting information such as new line starts, bold emphasis, and font size or style. If the search engine were to ignore the difference between content and 'markup', extraneous information would be included in the index, leading to poor search results.
URL redirection, also called URL forwarding, is a World Wide Web technique for making a web page available under more than one URL address. When a web browser attempts to open a URL that has been redirected, a page with a different URL is opened.
According to Google, the canonical link element is not considered to be a directive, but rather a hint that the ranking algorithm will "honor strongly". [1] [9] While the canonical link element has its benefits, Matt Cutts, then the head of Google's webspam team, has said that the search engine prefers the use of 301 redirects.
An issue inherent to indiscriminate link prefetching involves the misuse of "safe" HTTP methods.The HTTP GET and HEAD requests are said to be "safe", i.e., a user agent that issues one of these requests should expect that the request results in no change on the recipient server. [13]
If the redirect target is a non-existing page , or a special page, or a page in another project, then the redirect is not followed, and the reader sees the display of the redirect page (as illustrated below). If the target is a non-existent section of an existing page, then the redirect will take the reader to the top of the target page.