UserInteraction and its subtypes is an old way of talking about users interacting with pages. It is generally better to use Action-based vocabulary, alongside types such as Comment.

Usage: Between 50,000 and 100,000 domains

Property	Expected Type	Description
Properties from UserComments
commentText	Text	The text of the UserComment.
commentTime	Date	The time at which the UserComment was made.
creator	Person  or Organization	The creator/author of this CreativeWork. This is the same as the Author property for CreativeWork.
discusses	CreativeWork	Specifies the CreativeWork associated with the UserComment.
replyToUrl	URL	The URL at which a reply may be posted to the specified UserComment.
Properties from Event
aggregateRating	AggregateRating	The overall rating, based on a collection of reviews or ratings, of the item.
attendee	Person  or Organization	A person or organization attending the event. Supersedes attendees.
doorTime	DateTime	The time admission will commence.
duration	Duration	The duration of the item (movie, audio recording, event, etc.) in ISO 8601 date format.
endDate	Date	The end date and time of the item (in ISO 8601 date format).
eventStatus	EventStatusType	An eventStatus of an event represents its status; particularly useful when an event is cancelled or rescheduled.
inLanguage	Language  or Text	The language of the content or performance or used in an action. Please use one of the language codes from the IETF BCP 47 standard. Supersedes language.
location	PostalAddress  or Place	The location of the event, organization or action.
offers	Offer	An offer to provide this item—for example, an offer to sell a product, rent the DVD of a movie, or give away tickets to an event.
organizer	Person  or Organization	An organizer of an Event.
performer	Person  or Organization	A performer at the event—for example, a presenter, musician, musical group or actor. Supersedes performers.
previousStartDate	Date	Used in conjunction with eventStatus for rescheduled or cancelled events. This property contains the previously scheduled start date. For rescheduled events, the startDate property should be used for the newly scheduled start date. In the (rare) case of an event that has been postponed and rescheduled multiple times, this field may be repeated.
recordedIn	CreativeWork	The CreativeWork that captured all or part of this Event. Inverse property: recordedAt.
review	Review	A review of the item. Supersedes reviews.
startDate	Date	The start date and time of the item (in ISO 8601 date format).
subEvent	Event	An Event that is part of this event. For example, a conference event includes many presentations, each of which is a subEvent of the conference. Supersedes subEvents.
superEvent	Event	An event that this event is a part of. For example, a collection of individual music performances might each have a music festival as their superEvent.
typicalAgeRange	Text	The typical expected age range, e.g. '7-9', '11-'.
workPerformed	CreativeWork	A work performed in some event, for example a play performed in a TheaterEvent.
Properties from Thing
additionalType	URL	An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.
alternateName	Text	An alias for the item.
description	Text	A short description of the item.
image	URL  or ImageObject	An image of the item. This can be a URL or a fully described ImageObject.
mainEntityOfPage	URL  or CreativeWork	Indicates a page (or other CreativeWork) for which this thing is the main entity being described. Many (but not all) pages have a fairly clear primary topic, some entity or thing that the page describes. For example a restaurant's home page might be primarily about that Restaurant, or an event listing page might represent a single event. The mainEntity and mainEntityOfPage properties allow you to explicitly express the relationship between the page and the primary entity. Related properties include sameAs, about, and url. The sameAs and url properties are both similar to mainEntityOfPage. The url property should be reserved to refer to more official or authoritative web pages, such as the item’s official website. The sameAs property also relates a thing to a page that indirectly identifies it. Whereas sameAs emphasises well known pages, the mainEntityOfPage property serves more to clarify which of several entities is the main one for that page. mainEntityOfPage can be used for any page, including those not recognized as authoritative for that entity. For example, for a product, sameAs might refer to a page on the manufacturer’s official site with specs for the product, while mainEntityOfPage might be used on pages within various retailers’ sites giving details for the same product. about is similar to mainEntity, with two key differences. First, about can refer to multiple entities/topics, while mainEntity should be used for only the primary one. Second, some pages have a primary entity that itself describes some other entity. For example, one web page may display a news article about a particular person. Another page may display a product review for a particular product. In these cases, mainEntity for the pages should refer to the news article or review, respectively, while about would more properly refer to the person or product. Inverse property: mainEntity.
name	Text	The name of the item.
potentialAction	Action	Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
sameAs	URL	URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Freebase page, or official website.
url	URL	URL of the item.

Acknowledgements

This class contains derivatives of IPTC rNews properties. rNews is a data model of publishing metadata with serializations currently available for RDFa as well as HTML5 Microdata. More information about the IPTC and rNews can be found at rnews.org.

Schema Version 2.0