[html5] Tag Clouds with em

[Edward O'Connor]

> I thought the nesting of em elements would be great for semantic tag
> clouds. But now I read the spec carefully and it says:
>
>  > The em element also isn't intended to convey importance; for that
> purpose, the strong element is more appropriate.
>
> Now, I heard that the strong element might not be meant to be nested,
> however, the spec gives an example with nested strong elements.
>
> So, should I use nested strongs for a tag cloud or rather ems?

The primary difference betwen emphasis and importance in the spec is
that importance doesn't change the meaning of the text, but emphasis
does:

[[
Changing the importance of a piece of text with the strong element
does not change the meaning of the sentence.

The placement of emphasis changes the meaning of the sentence. The
[em] element thus forms an integral part of the content.
]]

So I think <strong> is a better fit for your use case.