This is a very simple add-on that allows you to set one or more forums as having "Global Stickies". Stickies in these forums will appear in ALL forums, unless those forums are blacklisted in the Global Stickies options.
- Upload the contents of the zip file to your server
- Install the add-on from the XenForo control panel
- Define your stickies forums and blaclisted forums in the XenForo options.