discount coupon hotel rooms
Indexing is simply the work the Search Engine Robots do to give you information on discount coupon hotel rooms. How does an indexing robot decide what to index? Well they just send their Bots or Spiders to crawl the web looking for discount coupon hotel rooms on web sites.
If an indexing robot finds a document that contains discount coupon hotel rooms, it may decide to parse it, and insert it into its database. How this is done depends on the robot. Some robots index the HTML Titles that contain discount coupon hotel rooms and keep them in their database. Others will look for discount coupon hotel rooms in the first few paragraphs, or parse the entire HTML and index all words.
