The other problems are:
1. Your site would become incredibly annoying for your visitors because this method breaks the back button.
2. Your site will be penalised from search engines by using this method.
However, if you still want to do this, head to Links/User/Jump.pm line 176:
and change it from:
Facebook, Twitter and Google+ Auth for GLinks and GCommunity | reCAPTCHA for GLinks | Free GLinks Plugins