User forms are specialized web site pages which collect input data from a site visitor. The data can then be processed: generate a custom page, be forwarded to someone in an email, added to a database, be forwarded to another site for processing, etc.
An example of a user form can be found on this site on our Site Planner page. In this case, the data is collected and used to generate a custom "Site Planner Checklist" for the convenience of our customers. The user form helps the customer organize their thoughts and think about key site design elements they might not have considered.
Forms have one or more scripts (miniature web site programs) associated with them. The scripts validate the data collected by the form, reformat it into screens or emails etc. Because of this, user forms are more expensive to implement than a standard web page.