The Ticker: YouTube uploads; PR summit; Google+ vs. Pinterest; Huntsworth; WH & lobbyists

GigaOm: YouTube users upload 72 hours of video every minute

The Holmes Report: Industry Groups to Join Global PR Summit

Ad Age: Google+ a Ghost Town as Brands Decamp for Pinterest

The Guardian: Huntsworth reports 3.8% revenue growth

The Washington Post: White House visitor logs provide window into lobbying industry