Mostly we write SEO for Search Engine Optimization and SEM for Search Engine Marketing. These are two different names but having 80% same functionality and concepts of web site optimization. In the world of internet every day we are facing different new technologies and web based applications appearing.

Similarly there are some technologies are invented in website optimization field. One of them is SEO and second one is SEM. SEO is the subset of SEM because in SEM we get the SEO results. So many people having Search Engine Optimizing experience prefer SEM as compared to SEO.

Two years later in the world there were hundreds of companies and organizations those were working for SEO techniques. But now the trend has changed, new discovery has been made in Search Engine Optimizing field. SEM has taken the place of SEO.

Algorithm
An algorithm is a set of restricted, prearranged steps for resolving a numerical difficulty. Each Search Engine utilizes a proprietary algorithm set to analyze the significance of its indexed web sites’ pages to your meticulous question.

Alt Tag/Alt Text
Indeed an Alt Tag/Alt Text is the HTML text that becomes visible wheb an picture or an image is loading. It also appears when cursor is there. Remember this tag or text is very significant in SEO and is included as keyword.

Anchor Text
For Search Engine Optimization an Anchor Text that is also known as Link Text plays and important role. It increases the relevancy of website keywords in many Search Engines. This text is clickable.

Backlinks
Backlinks are referred as back links. These are also known as inbound links. Backlinks are the best source to generate the web traffic.  These can increase the page rank of your website if it consists of Anchor Text. This anchor text should be relevant to your web site theme.