What is the context in which this appeared?

Happened inside a website or at the browser's home screen?

Edit: alright, seems it happens on the home screen:

http://superuser.com/questions/359931/get-rid-of-chrome-home... You could say the same just about any site you set as homepage. Yahoo is a fine example.

As for myself, about:blank is probably the URL I visited the most in my life.

Where was this?

New Tab page.

I guess I'm going back to using about:blank.

if you're in incognito mode it doesn't display it, but does in normal. I guess they got half of it right.