An iframe lets you put a direct view window of another page, a video, a flash game or many other things directly on your wiki-page. You can for example use it to put Youtube videos on your house, like [Stephen] normally does.
You must have a priv of 90, or lower to be able to use the iframe-tag. Note that if you let someone with a priv of 91+ edit your wikipage, the tag will no longer work and you will have to edit it again to fix it.
See privs for more information.
To easily grab a video from YouTube and display it on a wiki-page for display, go to the video you'd like to share on Elfpack, click on the "share" button on the page, then go to the "Embed" section and copy+paste that code on to a wiki-page, and submit changes to the page.
2013-05-22[kittykittykitty]: Are iframes disabled in houses? But not in picture descriptions?
2013-05-22[sammie h!]: I frames are for wikis, picture descriptions are under wikis so are enabled for there, but they cannot be put into houses on the description though I would highly recommend having that option. :)