IMDb is a site.
The Internet Movie Database ( abbreviated IMDb ) is an online database of information related to films , television programs and video games , including cast , production crew , fictional characters , biographies , plot summaries , trivia and reviews , operated by IMDb.com , Inc. , a subsidiary of Amazon . The site enables registered users to submit new material and edits to existing entries . The site also featured message boards which stimulate regular debates and dialogue among authenticated users . A registration process is necessary however , to contribute info to the site .