⟩ Tell me why would you bother marking up elements as ARTICLE, FIGURE, ASIDE?
HTML5 provides many new element types so the more complex content may be properly marked up. This helps machines (such as search engines, parsers, screen readers, etc.) read a web page and understand its content structure.
☛ ARTICLE defines a piece of self-contained content with a heading of its own, which can exist outside the context of its web page. Useful for a news piece, an article, a product.
☛ FIGURE designates an image as a figure related to the content such as a schematic, blueprint or chart. With FIGCAPTION, a visual description of the image can be added too.
☛ ASIDE indicates information related to the main content on the page but is not a part of the actual content. An example usage would be a list of related articles on the same topic as the main article.