In the Gmail: A Behind the Scenes Video
http://mail.google.com/mail/help/gmail_video.html

I found a javascript for show latest videos that get JSON posts feed from this blog
http://gmailbehindthescenes.blogspot.com

Strange blog that only has youtube id as post content. Interesting JSON use

Should google consider this blog as spam?

"[Blog spam] is done by **automatically posting** random comments or **promoting commercial services** to blogs, wikis, guestbooks, or other publicly accessible online discussion boards."
http://en.wikipedia.org/wiki/Spam_in_blogs

Nope.

And many outgoing links from your blog.

Mine was blocked by the bot for some 20 odd days due to the same