you can do it for each identity separately… for facebook, for exmaple, here is the function and its defaults:
function sp_PostIndexUserFacebook($args='', $toolTip='') {
$defs = array('tagId' => 'spPostIndexUserFacebook%ID%',
'tagClass' => 'spPostUserFacebook',
'icon' => 'sp_Facebook.png',
'iconClass' => 'spImg',
'targetNew' => 1,
'noFollow' => 0,
'echo' => 1,
'get' => 0,
);
so you would just pass the ‘noFollow’ argument as 1… so from reboot theme, change
sp_PostIndexUserFacebook('', __sp('Connect with me on Facebook'));
to
sp_PostIndexUserFacebook('noFollow=1', __sp('Connect with me on Facebook'));
and similarly for other identities…