1. Find a .gif you like on the internet
2. Right-click on it and select 'Copy image URL'
3. Come back to ECF and your post
4. Click the insert image icon (looks like a tree in a frame)
5. Click on 'From URL' at the top of the popup
6. Right-click in the URL textbox and select 'Paste'
7. Uncheck the box that says 'Retrieve remote file and reference locally'
8. Enjoy the .gif!