{$grsf_share_url}
{$grsf_participant_id}
{$grsf_participant_first_name}
{$grsf_participant_last_name}
{$grsf_referrer_first_name}
{$grsf_referrer_last_name}
{$grsf_referrer_email}
{$grsf_total_referral_count}
{$grsf_monthly_referral_count}
{$grsf_prev_monthly_referral_count}
{$grsf_next_milestone}
{$grsf_next_monthly_milestone}
{$grsf_total_invite_count}
{$grsf_total_impression_count}
{$grsf_share_url}
in your emails to provoke your subscribers to make referrals!