Try padding-left again but this time with "70px" as the value.
I am playing with fitebug on your site and it looks like it needs to be that big to have an effect.
If it still doesn't work a dirtier way will be to edit the
more_share_options template.
Add this code:
Code:
<vb:if condition="THIS_SCRIPT=='index'"><td width="20"> </td></vb:if>
Directly after the existing line:
Code:
<vb:if condition="THIS_SCRIPT=='member'"><td width="20"> </td></vb:if>