Facebook no longer allows HTML content to be displayed on personal profiles. To share a widget on Facebook, you'll need to first create a Facebook Page. You can do so here: http://www.facebook.com/#!/pages/create.php
Widgets can then be embedded on your Facebook page using the My Stuff application. First, go to the My Stuff page on Facebook: http://www.facebook.com/apps/application.php?id=2352149512
Then click the link labeled "add to my page"
Once the My Stuff app has been added to your page, you can embed widgets by copying and pasting the HTML code provided in your vFlyer account.
For a video tutorial on how to install and use the My Stuff App, click here.