TouchCast Studio: What Is The Difference Between The Social Handler VApp And The Other Social Media VApps?

The social handler vApp allows you to share your Twitter, Tumblr, Instagram and Facebook page in your TouchCast.  This is great if you want people to be able to find you in the social sphere after watching your TouchCast.  The other social media vApps such as the Twitter vApp and Facebook vApp allow you to embed a feed from the social site into the TouchCast.  The Instagram vApp allows you to bring in images from Instagram into the TouchCast.