Help Scout is a company that wants to rank for customer acquisition. Check out their pillar content on customer acquisition. Not only is the page very helpful for anyone interested in this topic, but because Help Scout links to a bunch of other sites, they are setting the page up to receive backlinks from those other sites. Marketers should think outside normal content creation practices and create a pillar piece of curated content.
Most free software licenses are based on copyright, and there are limits on what kinds of requirements can be imposed through copyright. If a copyright-based license respects freedom in the ways described above, it is unlikely to have some other sort of problem that we never anticipated (though this does happen occasionally). However, some free software licenses are based on contracts, and contracts can impose a much larger range of possible restrictions. That means there are many possible ways such a license could be unacceptably restrictive and nonfree.
There are gaps in the version numbers shown above because there are other changes in this page that do not affect the definition or its interpretations. For instance, the list does not include changes in asides, formatting, spelling, punctuation, or other parts of the page. You can review the complete list of changes to the page through the cvsweb interface.