You can put all sorts of custom content into your Protopage using the Edit as: HTML option in your sticky notes.
To see what is possible, take a look at our demo page.
To get started, go to YouTube.com and find a video clip you like (or upload your own).
Then, copy the code listed underneath the video in the box labelled ‘Embeddable Video’.
Now, add a new sticky note to your page, resize it so that it’s large enough to fit the video inside, and then click the edit button. Choose Edit as: HTML at the bottom of the text area, and paste in the code copied from the YouTube video clip page.
Click Save Changes, and you’re all done! If you make your page public, you can now even share the video clips on your Protopage with friends (hover over page numbers in the bottom right of your Protopage and click the padlock icons to make each numbered page public or private).