Well, from what I read the font tag is not supported anymore in HTML5, while <strong> and <em> should be preferred instead of <b> and <i>. So I would like to know if these two are supported as well.
That all depends on the engine it submits to. You can use as much html as wanted. But to get your content submitted for all, I would just add <a> and leave the rest. If no html is supported, it is removed, but if it is, the program does still not know how much that site accepts.
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