It's a really minor thing but on this page: http://www.activeinboxhq.com/install.html

In Chrome the dialog box on the page says: "This extension can access: Your data on gmail.com, google.com and 3 other websites". But when it popped up in my chrome it said "4 other websites".

It's not a big deal, but it briefly weirded me out when I don't know what those sites are, and when it's different to what I was expecting.

Will let you know what I think of the actual app once I have had a play.