Here are some common terms that you may come across:
Crawlers: The term used for the tools that search engines automatically send out to find websites, record them and index them within their databases. Also known as robots or spiders. Some crawlers will only visit the home page of a website while others may 'deep crawl' and index many sub-pages, depending on the structure of the site.
Search Engine: A web search tool that automatically visits websites (using crawlers), records and indexes them within its database, and generates results based on a user's search criteria. Submitting a website to a search engine usually requires just the page URL (and often an e-mail address) and optimisation techniques are essential for a website to be indexed and ranked appropriately by search engines. Best examples of a search engine are Google, MSN,Yahoo Indiabook etc....
Search Resuls: The ranked listing that appears once a search is submitted on a search engine or directory. Results are often displayed in groups of 10 and research has shown that websites appearing lower than 20-30 in the search results are less likely to be seen, or visited.
Meta Tags : An element of HTML coding on a website that is used by search engines to index a website. Most meta-tags are included within the 'header' code of a website and the most important tags are the title, description and keyword tags. Rules used by different search engines govern how such tags are used, how many characters they should contain, and how they should be formatted.
Directories : A web search tool compiled manually by human editors. Once websites are submitted with information such as a title and description, they are assessed by an editor and, if deemed suitable for addition, will be listed under one or more subject categories. Users can search across a directory using keywords or phrases, or browse through the subject hierarchy. Best examples of a directory are Yahoo and the Open Directory Project (see India Web Directory).
HTML : Hyper-Text Mark-up Language is the common coding used to create websites that can be read by Internet browsers (such as Microsoft's Internet Explorer and Netscape's Navigator). Part of the HTML coding for a website should include the meta-tags required for search engine optimisation.
Link Popularity : The term used to describe the number of hypertext links coming into a website from other websites. This factor is being used by many top search engines to improve a website's ranking and is therefore an important consideration for any website, but especially for new ones who need to build up such links as quickly as possible.
Meta Search Engines : A type of search tool that will allow a user to conduct a search across 2 or more search engines and directories in one go. These tools don't hold an index of their own but are programmed to search across many of the top search tools simultaneously.
Robots : See Crawlers.
Search Engine Marketing The term used to describe the range of marketing techniques required to make a website visible on search engines and directories so that it will attract visits from its target audience. This includes the optimisation of a site, the submission to directories, the use of 'pay-per-click' search tools and keyword related advertising.
Search Engine Placement The marketing term used to describe the process of ensuring that a website appears in the top results list of a search engine or directory once a relevant search has been implemented.
Spiders See Crawlers.
Submission The process of notifying search engines or directories about a website. Every search tool has a form to enable the submission of websites, varying from a simple URL address (for a search engine), to more detailed information (for a directory). Submissions may be made manually or by using automated software, although the former method is generally accepted to be more effective for search engine placement.
Spamming The term used to describe techniques that might be used to 'trick' search engines into ranking a website high up in their search results - such as the repetitive use of keywords, hidden text or keywords unrelated to the site's content. Search engines will penalise websites that use such methods and will either downgrade them in their rankings, or exclude them completely.