According to Craig Labovitz at security company Arbor Networks, Google’s domination of the network that is the Internet is now averaging at about 6.4% of all traffic. This is up a full 1% since the start of the year.
As Labovitz says:
If Google were an ISP, as of this month it would rank as the second largest carrier on the planet. Only one global tier1 provider still carries more traffic than Google (and this ISP also provides a large portion of Google’s transit).
According to Arbor, Google is actually growing faster than the Internet itself.