Search Engine FAQ asked question and answers

SEO FREQUENTLY ASKED QUESTIONS
Why SEO is important?
• 87% of all visitors are from a page 1 position
• 91% of Internet users use search engines.
• Over 250 million searches carried out daily in the UK.
• 73% of all online transactions start with search engines.

How much does the SEO cost?
Costs associated with SEO can vary from site to site and are directly influenced by your industry sectors and competition.

What is mean by supplemental index?
Pages that are in the supplemental index are placed there because they are trusted less. Since they are crawled less frequently and have less resources diverted toward them, it makes sense that Google does not typically rank these pages as high as pages in the regular search index.

What is spam index?
An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are identified that predict the presence of other phrases in documents. Documents are the indexed according to their included phrases. A spam document is identified based on the number of related phrases included in a document.

Why might you want to use no follow on an internal link?
Many sites have shopping carts and member login or logout links. This type of link is simply an administrative function and does nothing to contribute to site content. The search engine does not need to index those pages.

From an analytics perspective, what is different between users from organic search results vs. a type-in user?
A user coming into your site from an organic search usually has never visited your site before or is performing a general search for a specific product or topic. These visitors are trying to find the site that most suits thier needs. A "type-in" user is specially interested in your website. They may have found your URL in print advertising or from a friend. Often, these users are familiar with what you are offering and are coming back to your site as a repeat visitor.

How many target keywords should a site have?
I advise not more than three or four well related keyword phrases.

What is Latent semantic analysi?
Latent semantic analysis (LSAT
The process of analyzing the relationships between terms in sets of documents. The engine looks not only at the query, but also looks for common terms in the document set. Documents that are semantically similar will carry more weight than those that are not.

What is hilltop ,Bigdaddy?
Hilltop can be just ranking strategies to approach an authoritative ranking, that Google call it. There are three approach about it
1. Ranking Based on Human Classification
2. Ranking Based on Usage Information
3. Ranking Based on Connectivity
Bigdaddy is a data center only live at 66.249.93.104 and 64.233.179.104 right now.

What is page segmentation? (ever heard of VIPS?)
VIPS is a research paper from Microsoft that stands for Vision-based Page Segmentation which is just an offshoot of the general topic of page segmentation. It is an analysis of how a user understands web layout structures based on visual perception and is independent from the underlying code and technologies.

What is Phrase based indexing
Phrase based indexing is used to classify good and bad phrases based on certain criteria inside the entire document. The number and proximity are taken into account. It also is capable of predicting the presence of other phrases on the page and will assign a higher or lower value depending on if those phrases or present or not.

Explain shring algorithm?
These shingling algorithms look for blocks of content that do not occur frequently across a web site and look for blocks with certain desired features. When the engine stores this information, the navigational, advertisements, and other non-content areas are omitted. This increases speed, saves on storage space, and theoretically makes the results more relevant because of the increase in unique content.