There are two types of film reviews IMDb deals with: user reviews and external reviews.
User reviews (formerly referred to as "User comments") are reviews that our users submit to our site and are stored locally. See, for example, this index of user reviews for The Matrix (1999).
To submit a user review you simply need to look up the film in the database, scroll down to the bottom of the page and click on the link that says "Review this title", then follow the on-screen instructions. Please be aware that user-submitted reviews must comply with our guidelines or they may be rejected or deleted.
External reviews, as implied by the name, are reviews (usually from major print or online media organizations) that are stored on other sites. We do not have any control over their contents and simply link to them as a service to our users. For example, see the external reviews links for The Matrix (1999).
If you are a film reviewer or editor or a movie site and your articles are available on the web, you are encouraged to submit links to them. Please go to the film's page, scroll down to the bottom and click the button labeled Update.
The new page will include several categories with a box next to each one. To add an external review, scroll down to the Links to Other Sites heading and choose Add 1 Item in the External Reviews section.
Scroll down to the bottom of the page and click on the button marked Continue. You will be brought to a new page for the next step.
This new page will have two text input boxes. Include the full URL to the review page; under "Description" you only need to enter the site/reviewer name, as the movie title and the fact that it's a review are already part of the submission.
Chicago Sun-Times [Roger Ebert]
San Francisco Chronicle [Bob Graham]
Please note that we reserve the right to reject links to websites based on editorial discretion.
When you've entered all the information you wanted, go to the bottom of the page and click on the Check these updates button to proceed to the next step.
If your data included errors or details that our system believes to be potentially incorrect, the top section of the page will display them. You should see an explanation of what went wrong.
You can correct the errors or, if everything is OK, click on the Submit these updates button to send the data to our server.
You will need to repeat this procedure for every title where you wish to add an external review link.