For white hat - I recommend closing tags from indexing and making them non-sticky, and use for more accurate grouping of content.
For black hat - This is the basis for the generation and uniqueness of content (text with one tag + paragraph with such a tag + feed of a twitter on such and such a tag).
For black hat - This is the basis for the generation and uniqueness of content (text with one tag + paragraph with such a tag + feed of a twitter on such and such a tag).