: Is it a good idea to use UserComments for latest comments in the sidebar? So, I want to structure the most important parts of the site. I have main page, where there is a grid/wall of thumbnails.

@Ann8826881

You should use Comment instead of UserComments.

UserComments is for the action/event of commenting, while Comment represents the published comment itself. (You’ll often find that UserComments is used although it’s not appropriate; that is because Comment was introduced later.)



Neither Schema.org nor Microdata define which conclusions can be drawn when a page contains these annotations, i.e., it is not defined that only the main content should be annotated.

If a consumer (like a search engine) draws a conclusion like "If I find Comment markup, I assume that these comments are about the main content of the page", it’s quite adventurous: it would probably be wrong with this conclusion more often than not.

Instead, such a consumer should look for a property relating this Comment to something. For example, when it finds

WebPage → comment → Comment

it can conclude that these are comments about the webpage.

When there is no property, the only thing that can be concluded is: There is a comment.



So, it’s perfectly fine (and it can also be useful) to mark up any content that is shown on the page, not only the main content.

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