SmallP - 3:26 pm on Jun 4, 2011 (gmt 0)
I couldn't get the button to work either. After much trial and error I've discovered that it shows in Firefox and Chrome but remarkably it doesn't appear in most versions of IE (including IE8) - it just leaves an empty space.
I've stopped implementing it until that is fixed since the vast majority of my visitors use IE.
Seems strange to me! Do you suppose it wasn't tested properly?