turbocharged - 5:19 pm on Aug 3, 2013 (gmt 0)
The Provo, Utah datacenter was down yesterday for half the day (maybe longer). EIG (Endurance International Group), which owns BlueHost, HostGator and HostMonster, has many servers in this datacenter. The result? Many, and I mean many, websites were down. If any of these sites sent you referral traffic in the past, and were down yesterday, you would see a decline in referral and erroneously reported direct traffic.