One of SPIP’s most significant restrictions is its hierarchical structure: each article can belong to only one section, which can sometimes lead to classification problems.
Keywords offer a way of cross navigation inside the site. By associating one or more keywords to an article, we have at our disposal a way to create links to other articles with similar topics but which are located in other sections.
Keywords really only offer a benefit when each one is associated with several articles as a way of linking such various to each other.
Only the administrators are able to create and modify keywords.
Very often the section structure can work without keywords if it has been carefully constructed: articles with the same topic are simply located in the same section, so it’s quite pointless to add keywords that simply repeat a topic which is common to them already. In such cases, a site administrator can totally disable the use of keywords on the site’s content configuration page.