I've been wondering for a while about having headings (i.e. <h1> etc.) as links (e.g. <h1><a href="some-internal-page.htm">Some heading</a></h1>) or even parts of the headings. Is this considered spammy practice? I've used it on a few pages on one site with no obvious detriment to those pages, but I'm curious to know what others think/do about this.