Professional social network Linkedin surpassed Myspace in terms of traffic to become the No. 2 most visited social networking site in the U.S. in June. LinkedIn, which has seen a resurgence of traffic after its IPO in May, reached an all-time high of 33.9 million unique visitors in June compared to Myspace, which saw 33.5 million unique visitors (that’s down from 34.9 million in May).
