Ad Age posted an interesting article Wednesday about all of the key executives running Facebook who used to work at Google. In fact, an estimated 358 current Facebook employees (out of 3,600) used to work at Google.

Perception is that Google has peaked and is headed for decline. And, according to the article, Google’s 26,000-person workforce creates the kind of bureaucratic slog that deprives creative minds of oxygen, forcing entrepreneurial execs to run for a breath of fresh air. The Googlers who run Facebook know the enemy all too well. Is Google primed for a fall?

We used Social Radar to measure chatter around Google and Facebook over the past 3 years.

Google vs. Facebook chatter

Our query produced interesting results. Since July 1, 2008, Google chatter has steadily decreased, while Facebook chatter has steadily increased.

With Google’s Eric Schmidt admitting at this week’s D9 tech conference in Los Angeles that as CEO he “screwed up” and was too busy to do anything about social media as Google’s CEO.

Google launched their +1 buttons for recommended content across the web today. But the +1 button only shows up for signed-in users of Google.com and only pulls social graphs from Buzz, Reader, Talk and Gmail. Until Google pulls in Facebook friends and Twitter followers, will the +1 button help them gain any traction?

Facebook today announced its new modern messaging system, with an intent to make communication simpler. According to Facebook CEO Mark Zuckerberg, modern communication needs to be seamless, informal, immediate, personal,  simple, minimal and short. The new product includes seamless messaging, conversation history, and a social inbox, and provides a way to communicate no matter what format you want to use: email, chat, SMS. Zuckerberg said that 15 engineers worked on this product — the most that have ever worked on a single Facebook project.

Many speculated leading up to the announcement that Facebook would be announcing a Gmail killer, taking a direct shot at competitor Google. The new messaging system is “not an email killer” according to Zuckerberg, but the new service could transform email by melding messaging functions with people’s social connections to provide a more personal and intuitive experience. The new service would allow its more than 500 million members to communicate with anyone inside or outside the walls of the social network. Microsoft’s Hotmail, in contrast, has 361 million global users, followed by Yahoo Mail’s 273 million users and Gmail’s 193 million users, according to comScore.

Chatter around Facebook has been 77% positive in the last 24 hours.

Both Google and Facebook have launched features within the last year in direct competition, including Google’s “Facebook killer” Google Me.

We analyzed chatter around both Google and Facebook within the last year. In November 2009, Google was clearly generating more chatter online than Facebook. Today, the two have nearly swapped positions, with Google’s chatter steadily declining while Facebook chatter increased throughout the past year.

Will Facebook’s new messaging system take users from Google’s Gmail service and increase the social networking site’s popularity even more?

Unsocial, a new service that launched yesterday, lets users connect with all the people they don’t know but probably should. The service enables users to sign up via LinkedIn and input smart tags that describe his/her professional background and the traits of people s/he is seeking. Unsocial then uses the profile and basic information to provide matches and a messaging platform.

As services like Twitter have provided a platform like never before for following like-minded strangers, Unsocial takes the concept to the next level by providing means for networking with your new contacts.

Buzz around Unsocial spiked yesterday.

In today’s flattened world, with services like Meetup enabling like-minded individuals to get together, our groups of friends will no longer be constricted by geography or schools or fraternities. Your ‘friend list’ can be people just like you from all over the world.

Diaspora, the open source social network and potential Facebook challenger, will be ready to launch on September 15, according to the project’s developers. Diaspora is meant to be an alternative to Facebook, Twitter, and other social networks allowing you to share content such as photos, status updates, links, etc.

In a blog post on August 26, the developers said Diaspora is working and they’re happy with it, although it’s unclear what the product will look like.

Chatter around Diaspora shot up yesterday after the announcement.

But overall chatter around Diaspora is minuscule compare to Facebook.

Chatter around Diaspora has been slightly more positive than Facebook (although bear in mind the massive difference in overall content).

In the last two days, Diaspora was only mentioned in less than 3% of Facebook related posts. Should Facebook be concerned yet? Google Buzz was mentioned in 4%, Twitter in 17& and Google Me in only .04% of Facebook posts comparatively.