H3-H6 headings
These are used to mark up additional subsections within your content. It’s doubtful that using keywords in these tags will have a measurable impact, so there’s no need to force it — do whatever feels natural.
One thing I would like to add is that it is very rare that a bulgaria mobile database piece of content needs to go beyond an H3 level heading. If you find yourself venturing into H4 and H5 territory, you may be missing out on opportunities to optimize your content structure.
Google has gotten pretty good at processing natural language, so there’s less need to stuff your landing pages with keywords. However, keyword optimization hasn’t completely died out, it’s just evolved. Here are some keyword optimization tips that still make sense:
Use Keywords
This is something you probably do naturally. But a lot of people start their posts with a long intro and don’t use their main keyword until later in the post. It’s better to put your keyword somewhere in the first 100 words or so. It helps Google understand what your landing page is all about.
Beyond Exact Match
Remember the Hummingbird algorithm update? The time when Google learned to recognize the meaning behind search queries and gave a common answer to many queries with “different keywords” but “same meaning”? This update changed the way SEOs optimize landing pages - now we no longer think in “single keyword optimization”, but try to make our pages relevant to a whole set of synonyms and related terms.