The subject of canonicalization is literal too big a topic to cover in just one article and as such I will avoid the topic of parameters, sessions ID's and other whole scale duplicate content issues that each would require an article on their own and instead I will focus on some less obvious canonicalization issues that sometimes are tougher to spot.
Canonicalisation is basically the process of determining an authoritative page where two pages exist on two different URLs. With some form of canonicalization, these pages could both be indexed by a major search engine and end up competitiveness against each other for a given query that is targeted to each particular page. One example of a canonicalization issues is the trailing slash. Webmasters may opt to place a trailing slash at the end of their URLs, or this may be pre-determined by their particular CMS. However, this URL: <a target = _new rel = nofollow href = https: //translate.googleusercontent.com/translate_c? depth = 1 & amp; hl = en & amp; ie = UTF8 & amp; prev = _t & amp; rurl = translate.google.com & amp; sl = en & amp; sp = nmt4 & amp; tl = en & amp; u = http: //www.example.com/& usg = ALkJrhgR4c9SeVEZ9zBFmDg8PtrbuNr7Yg> http://www.example.com </a>
is different from this URL: <a target = _new rel = nofollow href = https: //translate.googleusercontent.com/translate_c? depth = 1 & amp; hl = en & amp; ie = UTF8 & amp; prev = _t & amp; rurl = translate.google.com & amp; sl = en & amp; sp = nmt4 & amp; tl = en & amp; u = http: //www.example.com/& usg = ALkJrhgR4c9SeVEZ9zBFmDg8PtrbuNr7Yg> http://www.example.com/ </a>
– notice the subtle difference. There is a danger that both of these pages will be indexed, so posing a duplicate content issue.
Another duplicate content issue is that of the non-WWW version of a page competing against the WWW version of a page. Both versions of this URL can be indexed and thus all of the pages on your site could potentially be competitive against one another. Once a search engine crawler accesses your website through a non-WWW version of your URL it may continue to crawl your webpage following this pattern ie it may crawl every page on your site via the non-WWW versions of your URLs. Two further examples of canonicalisation problems include the index version of your webpage eg index.html or index.php, and the https: or secure pages on your website.
All of these issues require tailor solutions. In some instances you can merely set up a 301 redirect to redirect any authority contained in one page onto another. In some instances you can disallow certain pages (eg https) via robots.txt. In other instances, you may need to pursue a different strategy altogether eg the canonical tag or no index tag, or parameter handling via Google Webmaster Tools. …
Your computer registry is the center of your computer's operation. Every program and software stores vital information in your registry that makes it able to run properly. Any information on changes made in your computer like installation and un-installation of software are recorded in the registry. Here, you need to take good care of your computer registry and keep it healthy by eliminating superfluous files. That leads us to a very common question: How to clean my computer registry in order to keep it free from junk files and improve my computer's performance?
As we have discussed earlier that your registry is the core database of your computer where every operation make its reference to files stored in this area; This further implicates that this area also contain redundant data which used to be a part of your previous files and programs but are now deleted or un-installed. Therefore, your computer is also filled with these junk files as you keep on using your computer.
In order to clean your registry to improve its performance, you have to delete all junk files as they are just slowing down the operation of your computer. Previously, people manually delete trash files. However, you should be highly skilled in computers in order to do this because you run the risk of accidentally deleting very important data necessary for other programs to run properly. Furthermore, this is also time-consuming as there are large files of junk you need to identify one by one and delete them.
Fortunately, there is software that automatically identifies all junk files in your computer and present them to you for further action to be done. You are given the option to delete them, modify these files, or repair them. Once you have selected your desired action, you registry is then cleaned out and your computer's performance improved.
This software is called Registry Cleaner; and this is the answer to your question on how to clean my computer registry to improve its performance. With a great registry cleaner, your computer could even perform back to its out-of-the-box performance level; just like brand new. …