This new feature is available in all newly-created Gmail accounts, and it is slowly being rolled out to all existing accounts. It’ll take longer than the few hours or days that most Gmail features take to get out to everyone. You’ll know it’s on for your account when you see the Accounts and Import tab (formerly just called Accounts) under Settings.
Previously, YouTube consistently ranked 10th among all websites by market share of visits until the week ending Jan. 10, 2009, where Gmail moved up one rank to reach #10. The websites have been swapping positions regularly ever since.
Among a custom category of all Google properties, Gmail ranked 2nd behind Google for the week ending Mar. 7th, 2009.
Both websites are receiving more visits than one year ago, with a bigger increase in the growth of visits to Gmail. The market share of visits to Gmail has increased 70% for the week ending March 7, 2009 as compared to the same week last year. Visits to YouTube also increased 16% during the same time frame.