Abstract: Embodiments of the present invention relate generally to the classification and management of digital data artifacts, and particularly to systems and methods for annotating and associating a comment with a content item available on a computer, TV or mobile (e.g., handheld) device using forms. The digital data artifacts may include at least user-defined and extensible artifacts, or pre-built artifacts, or comments and tags. Comments may include, but are not limited to, one or more of unstructured text, structured data (e.g., data entered or browsed to via a form), an audio or video file, tags, etc. The artifacts may act as a classification system for a user. A method embodying the invention includes navigating to a content item for comment or annotation, and selecting a tag set and/or a form, which is filled in and used to comment on the item and then saved in a database.