I am a big fan of minifying everything whenever possible. It is a sin for me to don't do this.However, I recently read that one of the thousands tips to boost your website rank on search engines was to:give you content context with good class and id name in your HTML[source]I always change id and class names to one or two character length...Is not that I don't believe what that guy said, but I really need some confirmation on this. For me it doesn't make sense why would that matter.Is that point correct?(in case it is) Why?
Is minifying id and class names a bad SEO practice?
seo;html;search engines
I wouldn't worry about ID and class names. Although the most popular ID names did affect new HTML5 tags names (header, footer, etc) and may help non HTML5 sites show distinct sections of their pages, I wouldn't go so far as to say including keywords in them affect rankings. I would be sure to use proper HTML tags and microformats, however. We know as a fact that search engines use those as rankings factors or at the very least that they can affect how search engines display your content in their search results which can affect your click through rate. 