Search Engines: Crawler-Based, Directories (Human-Edited) and Paid Inclusion.
Search Engine types, Crawler-Based, Directories (Human-Edited) and Paid Inclusion Engines.
The Crawler-Based Search Engine also known as the Spiders or Web Crawlers, it uses special software to automatically and regularly visit the websites. This software referred to is a Bot, Robot, Spider, Crawler. Don’t be confuse they are all has the same concept. These program run on the search engines. After you submitted your website to the search engine, this software scan your page automatically, follow the links on your first page. After a spider has found a page to scan (this process called “spidering” or “crawling”), it retrieves the page via HTTP.
Directories (Human-Edited) is different. After completing the submission, your website will be queued for review by a Human editor. You should take your manual submission seriously, submitting a relevant and precise description to the directory (directory listing) is very important or else the directory editor will reject your submission. Due to a large numbers of website submission to the directory these days it usually takes weeks or months before your site will be reviewed.
Paid Inclusion engines. Major search engines such as Yahoo and Google offer this paid listing option as part of their ranking and indexing system. With this type of engine you have no other way but pay to keep your site listed or top-ranked for the keywords of your choice in the search engine.
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