By Nathan Lynch
A ‘Page Rank’ is a number Google gives to a web page that represents how important Google thinks the page is on the web. When one page links to another, Google considers it to be effectively casting a vote for the other page. The more ‘votes’ there are for a page across the whole web, the more important that page must be. But that’s quite an assumption, isn’t it? The importance of the page that is casting the vote determines how important the vote itself really is, meaning in Google calculations a page's importance comes from the votes cast for it. These votes are then taken into account when the page is ranked.
So why does it happen? Well, Google pulls its results from over ten thousand servers, and they can’t all be updated at once – Google would have to go down for the update. Instead, each server is updated with the new index, one at a time. This can cause very strange behavior in the page rank process if two major sites located on separate servers happen to have a close linking bond.
Page Rank matters because it’s one of the most influential factors that determine a page's ranking in Google’s search results. If you want to have good Page Rank, you’d better make sure people are linking to your site. Well, don’t jump the gun and try to get your site linked from everywhere you can, because Google doesn’t count every link. They have started filter out links from known ‘link farms’ (sites that are nothing but big lists of links), and being linked to or from these kinds of sites will get you penalized by Google. Be careful out there. They have also implemented a new relevance calculator that (true to its name) tries to determine how relevant the links into and out of your site are. The most important factor here is that Google considers long lasting links as more meaningful than a recently published link.
The best way to increase your page rank is to contact people with relevant and complementary content (that is, content that does not compete with your own but that enhances it). These links are most likely to last and they will not only increase your Google Page Rank, but they will also provide relevant hits via the links themselves.
The 10,000 servers that Google uses are distributed between seven datacenters all over the world. Google doesn’t keep all of those eggs in one basket – they want to be able to lose one datacenter and have the rest survive. If part of Google goes down, people can still use the search engine and as I said before, this allows your site to be accessed via related sites if the server holding your sites index happens to go down. The datacenters that Google has put into play are enormous in comparison to most datacenters around the world. Google rivals some of the largest datacenters in the world with each of its datacenters and is probably the largest in the world if all were combined into one.
The more links there are on a page, the less Page Rank value your page receives from them. You should also remember that it takes progressively more Page Rank to move up a level. It is generally pretty easy to achieve a Page Rank of three. Once you achieve a Page Rank of four, your site is getting formidable. Increasing past this mark may prove difficult and will require very important content. Reaching 8+ is very difficult. These ranks are usually reserved for sites that are crucial for the functionality of the internet.
The datacenters updating their indexes at different times causes Google to do its dance. Unless you’re looking for your website’s ranking, you’d never notice this as your site is normally available at all times. The unfortunate bit is that often times you will lose your page ranking for a short period of time or your site will seem to have a lower number of pages indexed by Google. If you insure that you have several hundred pages available on Google at all times you will most likely be able to provide all of your content at all times either directly or indirectly.
Article Source: www.ArticlesBase.com
There are two types of search engines: Search Engine Directories and Search Engine Spiders. Each search engine (regardless of whether it is a spider or a directory) uses unique criteria for "ranking" websites. Optimization service site web. Great optimization site web resource links.
