Nancy - I would only get it if you have a large customer base that needs it. I give my customers my upline's web address so they can see prices and stuff. She's in a different state, so she would notice if they accidentally ordered from her. If you're looking for new customers, I wouldn't do it. They will not find you unless you meet CMs minimums for referrals.
It may be handy for advertising workshops, but you can always send out e-mail for that. JMO.