SPDY - 90% of all Gmail Traffic via Chrome/HTTPS

Anyone watching the SPDY-DEV group will have heard something pretty amazing today. SPDY is a proposed alternative to HTTP from Google. It was launched in November 2009 and has been chugging along making progress ever since, but frankly without much further buzz.

Today, Google admitted on the mailing list that 90% of all Gmail and other Google services go via SPDY when the client is Chrome and SSL is used:

Yes, indeed SPDY is enabled in Chrome and on Google servers for all SSL
traffic at this point.  (Actually, we do 90% on SPDY, with a 10% holdback
for purposes of A/B comparisons).

This is pretty damn significant real world usage.