Mark Zuckerberg and 900 million of his friends hit Wall Street with America’s largest IPO and once again made history. Facebook’s first trade was $42.05 giving the social network a valuation of ~$115 billion. In the process, Zuckerberg became the 29th-richest man in the world with another half dozen employees also becoming billionaires. It’s also estimated that U2′s Bono will make more from his investment in Facebook than in his entire 30-year music career.

As the stock trades, investors will learn to Like Facebook as long as Mark and Co. continue to perform for those very investors, who may or may not actually have a Facebook account, and who may or may not even understand the future of media or the evolution of the human network.

Zuckerberg has made it clear that he intends to spend his time, energy and that of his team to run Facebook “the hacker way.” Doing so, he believes, will steer Facebook clear from the fate that befell MySpace. To compete for the future, he will invest in the ongoing development of engaging user experiences. As I mentioned in an interview with Al Jazeera, Digital Darwinism threatens every company, including Facebook: “In an era of digital Darwinism you have to compete for relevance in real time, almost faster than real time.”

Certainly Zuckerberg will face challenges of balancing the company’s focus on investor versus user value and as an analyst, I will not only study its progress, I’ll continue to share my thoughts on where the company can invest its new found capital to effectively compete for relevance.

Let’s start here…

1. Mobile: Facebook must communicate its mobile strategy and how it plans to monetize engagement on tablets and smart phones. As of May 2012, time spent on Facebook via mobile devices exceeds that of traditional desktops. Facebook does not monetize mobile, and with this stunning shift in Facebook engagement, the time to do so, was well, yesterday. Post IPO, Facebook must convey its vision and supporting business models for a single view, but dual platform community.

2. Search: To compete with Google in traditional search is fruitless. To compete against Google in social search, where the experiences of friends contribute to an evolving customer decision journey is lucrative. I do believe that search becomes an integrated part of a larger experience where Facebook has the potential to become something along the lines of a personal OS. The idea here is that the right information will find you based on how you curate your network with people, apps, and services. It’s where the online experience and all you do, starts on your personal dashboard.

3. Relevance: As you read, I believe that in order to not only survive Digital Darwinism, businesses must lead stakeholders toward new and rewarding markets. To compete for the future starts with competing for relevance. In almost every business interview I’ve conducted about Facebook, I’m asked whether or not Facebook is “cool” anymore. The discussion naturally progresses toward MySpace, which I feel is counter productive.

Comparing Myspace with Facebook is like comparing Saab to BMW or Saturn to Ford. Competing for relevance becomes part of the leadership regime, and it’s why on the eve of its IPO, Facebook chose to host an all-night hackathon rather than throw the usual rooftop party made popular in the days of Web 1.0. I guess in its own way, Facebook is trying to stay cool, or more importantly, stay true.

4. Building and Shipping: 1 Hacker Way isn’t just the way of way of life at Facebook, as the official company address, it’s literally the way to Facebook. Zuckerberg is creating a “build it and ship it” culture. This heads down, in the developer zone focus is part of the company’s now famous ability to innovate and execute. It is also now a potential liability as the company moves into the public and investor spotlight. Fail fast and learn isn’t just part of Facebook, it’s a mantra in silicon valley.

However, Facebook must focus on more than just user experience, it must focus on people and behavior globally and locally. Google tends to take an algorithmic approach to development. One could argue that seeing the future through a developer lens and not one of digital anthropology, sociology or ethnography is why Google has wrestled with opportunities to socialize new and existing products. While Facebook builds and ships it must also continue to explore the intersection of technology and liberal arts to build and ship in ways that continue to define or redefine how people discover, connect, and share.

Facebook has every potential to truly earn Wall Street as both a friend and a fan. To do so however, will take the company’s continued investment in the social graph and now also the investor graph.

In honor of Facebook’s IPO and as my way of sharing my thoughts of whether or not Mark Zuckerberg’s attire will affect his ability to run a successful company, here’s a picture of my hoodie:

[Photo of Mark Zuckerberg by Brian Solis]