The main "tour" link says:
This site is all about getting answers. It's not a discussion forum. There's no chit-chat.
While we're happy that SE is not a forum, new users can be put off by this fact. And it's not even a fact: We do have chat! It's in the chat room, but the entire page makes no mention of this brilliant sideshow.
Please mention the awesome chat in the tour.
Some sites suffer from poor meta participation. It was pointed out that meta is not mentioned in the tour either - and with the new top bar, its link is not even visible without clicking into a menu.
Please mention the meta site in the tour. Include a link to the excellent meta about page.