What's the difference between Old or New site?

old site = [paper-papers.com] <= notice the dash in our name - we will retire this platform June 20, 2017

new site =  [paperpapers.com] <= notice NO dash in our name

NEW ACTIVE SITE: https://www.paperpapers.com/

================== Official Email Notice that was Sent Out to all customers who were registered on our old site ==================