Utilise keywords within your own site to create, categorise and organise a content framework.
It is true that Google no longer holds any weighting on a website’s keywords – a direct result of abuse by webmasters in a bid to superficially increase page rank. Since this time, webmasters have shunned the meta keyword from their sites, often removing them entirely or rehashing the same basic keywords. The latter practice does you no favours; it simply bloats your site unnecessarily.
Is the fate of the meta keyword really set on a grave 'til hell freezes over? I would suggest that it doesn’t have to be that way. Websites often incorporate tags and tag clouds on their site; initially they were a vain attempt to replace the meta keyword, and Google once again slammed the door shut on their SEOness. So why did the tags (and to a lesser extent, the tag cloud) hang around?
Moving back to meta keywords (which essentially are hidden tags), it seemed silly to add more code to a site and make something useful redundant. Many CMS still support meta keywords, and one of my recent projects has been to use the meta keyword as a way to store my website’s related tags. If I cross-reference the keywords with matching keywords from other pages on the website, I can quickly build up a web of related articles.
This adds another dimension of site navigation and management to my site. I typically use the Joomla! CMS for my own personal projects, and while it structures pages in a sensible way for LSI (Latent Semantic Indexing), it doesn’t currently support multiple category/sections specifically in a nested manner. So, for me to offer good SEO and a better user navigation experience on my sites, I have rejuvenated the meta tag to link related articles together.