<p>I flag link-only-answers as "not an answer". I also vote to delete them in the low quality review queue, because even though it is possible such links to be helpful, the way the information is provided is not adequate to the Stack Exchange format. This is the minimum recommended procedure I understand from reading a compilation of such matter available <a href="https://meta.stackexchange.com/tags/link-only-answers/info">here</a>.</p>

<p>Moderators can convert answers to comments, but they will not have the time to check all cases. If someone come across with a link-only-answer, which the link is useful, it is ok to flag for "moderator attention" and ask/suggest for the comment conversion, explaining why. </p>

<p>Leaving a comment to the OP asking for more context in the answer is a possible option, but not required. Editing the answer to include more information can be considered a "radical edit", which is a custom reason for rejecting edit-suggestions from &lt;2k rep users.</p>
