Virb has made it super easy to add Topspin. Simply visit the Site Services page in Virb, add your Topspin API key and save the page.

If you're wondering how to find your API key, just log into your Topspin account, click on the Settings link along the top of the page, then click on Account Settings.

Visit your build area in Virb to Create a New Page where you will have Topspin as an option.

Note: You can easily embed Topspin widgets manually on any page you create in Virb as well.