If you’re installing the very useful Video Filter module for Drupal, you might get confused like I did by it’s non-functional nature.
It turns out that to enable the module, after you have done the normal step to enable a module in the Administer/Modules page, you then have to go to the Administer/Input Formats page at “yoursite.com/admin/settings/filters” then configure the input formats for “Filtered HTML” and “Full HTML”, where you’ll see a new “Video Filter” option. Check this box, and suddenly you’ll be able to embed a Youtube or other supported website just by putting
[video:url]in your normal drupal page. Magic!
Why this isn’t included in the minimalistic installation and usage instructions I’ve got no idea.