Ning

1. Login to your network and click the "My Network" tab
2. Scroll down to the "Tools" section in the right column and click the "Custom Code" link.
3. Include all of the files referenced on the stratus.heroku.com installation instructions here. Including the stylesheet which should appear first.
4. Click "Save"

Tumblr

1. Login to your Tumblr dashboard and click the "Customize" link in the right column
2. Next click the "Theme" tab and if you haven't already, and click the "use Custom HTML" link.
3. Once presented with an HTML text editor, include all of the files referenced on stratus.heroku.com right below the opening "head" tag.
4. Click "Save"