Hi Duane,
Sure, I'll add an option for OpenInNewWindow. I'll do it with a javascript onclick like this:
onclick="window.open(this.href,'_blank');return false;"
because the target attribute is not valid in xhtml, not sure if it is/will be valid in html 5.
In any case it is not required that you keep that link, you are free to remove it though I do appreciate it when people keep it there. It is also possible to replace it with a plain old html link
<a href="http://www.mojoportal.com" target="_blank">Powered by mojoPortal</a>
or
<a href="http://www.mojoportal.com" onclick="window.open(this.href,'_blank');return false;">Powered by mojoPortal</a>
Best,
Joe