Forum:Is it possible to warn users if they do not add categories to a page?

On some wikis, after the end of all the other text on the page, "Add categories here" is displayed. In fact, this may be all wikis, but I am not sure. This works, however many users do not preview their edits. Is it possible to create a message box similar to the Are You Sure You Want to Leave This Page? message that appears if you leave without saving, however this one would say This Page is Uncategorized upon clicking Publish/Save if there are no categories on the page. Of course, there would have to be an option to bypass this message, but who would realistically do that?

Also, is it possible to disable the Read More section?

¡ɯǝɥʇ ɹoɟ ˙˙˙ɹıɐɟ sɯǝǝs ʎlpɹɐɥ 'ʎuɐɯ os ʇsu!ɐƃɐ әuo 20:27, June 13, 2012 (UTC)