Hit may refer to any of the following:
1. With respect to the Internet, a hit refers to each request made by a client to a server. For example, if someone goes to a page with four images, there would be a total of five hits; one for the text and one for each image loaded. Hits help the determine the present, detect abnormal traffic behavior, find out what areas their visitors enjoy most, and set price points for Internet advertising.
A hit is the server's load counts, not its unique visits, which is a page view.
2. With Amazon.com Mechanical Turk, a HIT is short for a human intelligence task and is a task that is easy for most humans to complete but are difficult for a computer. These tasks could be something like identifying colors in an image, finding keywords in a sentence, comparing text, or completing a survey. Because of the difficulty level, many of these tasks do not pay a lot but can be easily completed and can be a source of supplemental income.