A sitemap page is a very good way of giving the search engine robot every opportunity to reach your website pages. Since robots click through the links of your web pages, make sure that at least your most important pages are included in the sitemap. You may even want to include all your pages there, depending on the size of your site. Be sure to add a link to the sitemap page from each page on your site.
WWW Robots (also called wanderers or spiders) are programs that traverse many pages in the World Wide Web by recursively retrieving linked pages. The method used to exclude robots from a server is to create a file on the server which specifies an access policy for robots.This file must be accessible via HTTP on the local URL "/robots.txt".
Meaning of *
If the value is '*', the record describes the default access policy for any robot that has not matched any of the other records. For example, to disallow files in the directory web promotion/list and an individual file secret.html, we use the following code:-
Keyword density is the ratio of a keyword or key phrases or searchable phrases to the total number of words on that page. It is one of the most fundamental aspects of successful search engine optimization. The keyword density must be correct to improve search engine ranking potential. The relevant keywords or searchable phrases must be researched before developing the site. This method can significantly increase search engine ranking potential.
SEMPO defines it as:-
"SEM: Acronym for “Search Engine Marketing.” A form of internet marketing that seeks to promote websites by increasing their visibility in search engine result pages (SERPs). SEM methods include: search engine optimization (SEO), paid placement, contextual advertising, digital asset optimization, and paid inclusion. When this term is used to describe an individual, it stands for “Search Engine Marketer” or one who performs SEM."SEM as an umbrella term may mean: SEM = SEO + PPC + Other Marketing Activites. SEM is defined in detail at: Does SEM = SEO + CPC Still Add Up? Our search engine marketing SEM services can improve website visibility in search engines and bring targeted traffic and more sales leads. We follow a holistic approach to internet marketing. How SEM can help in the growth and expansion of the business, We understand it and our professionals render the best SEM services to the customers and cater to their growing demands.