User blog comment:Trellar/A new way to promote your wiki/@comment-839460-20120901130739/@comment-4674838-20120901165350

The reason some wikis don't have the promote feature is because they haven't been upgraded to MediaWiki 1.19 yet. However, your freedom wings wiki *does* have 1.19, which is why the promote feature is available there.

For your other wikis, be sure to check your Special:Version page to find out what version of MediaWiki you have. If it says you're still on the old 1.16.5 then you won't be able to promote yet and you will have to wait a few weeks until the upgrade automatically happens.