This information, referred to as a tag, included information like title, actors, and file format; and could help the web crawlers search for videos.
Most web directory entries are also not found by web crawlers but by humans.
Modeling these communities and their information needs is important for several web applications, like topic-driven web crawlers, web services, recommender systems, etc.
Web scraping is closely related to web indexing, which indexes information on the web using a bot or web crawler and is a universal technique adopted by most search engines.
Consider that authors are producers of information, and a web crawler is the consumer of this information, grabbing the text and storing it in a cache (or corpus).
This is useful to make a page appear to be relevant for a web crawler in a way that makes it more likely to be found.
A web crawler is used to search widely.
A web crawler can periodically traverse a website to see if any changes have occurred since its last visit.
