The news about Facebook’s co-founder Dustin Moskovitz leaving the company have been confirmed by the Web site’s co-founder and CEO Mark Zuckerberg.

"Dustin has always had Facebook's best interests at heart and will always be someone I turn to for advice," said Zuckerberg, who launched the popular social networking platform five years ago alongside Moskovitz and Chris Hughes. The Web site was and still is a massive success with more than 100 million users and the company keeps getting bigger with a staff of over 700 people.

Moskovitz announced that together with his colleague Justin Rosenstein will build up a new company. They will be both with Facebook for another month and their work on the new project has not yet begun. Rosenstein released a goodbye note on his Facebook page, saying that they will “build an extensible enterprise productivity suite, along with a high-level, open-source software development toolkit, built for the web from the ground up.” He added that their new project will use many of Facebook’s conventions and if the end result will turn out to be a set successful development tools, he hopes that Facebook’s engineering team will be opened to the idea of using some of them.

"We hope our products will become to your work life what Facebook.com is to your social life," as the two recently stated, could become a good hook for their upcoming advertising campaigns.

He also talked about his business relationship with Moskovitz, as the two share a similar vision when it comes to their activity, their future plans and take on things. “Efficiency-through-software was dear to his (Moskovitz’s) heart as well, and we would stay up ’til 3am raving about how shortcut keys and high-level abstractions would change the world. We shared a passion for technology, for entrepreneurship, and for using them to solve the same set of problems,” he explained.

The two departures follow several others that the company had to deal with, as in the past few months several Facebook executives announced the pursuit of other carrier opportunities. Among them, Vice President of Product Management Matt Cohler, who was replaced by Chris Cox, the developer of  Facebook's key News Feed feature.

Even though some say that the company’s glow is fading, this year’s estimates point out to a revenue between $300 and $350 million, which was possible through a display-ad sales agreement with Microsoft Corp. The registration procedure is free of charge, as the company generates its profit only through advertising, which includes banner ads.

The company had a hard time at first dealing with its competition to MySpace, but it all quickly turned for the better, as the platform provided several different features that people immediately enjoyed. Even though at first the Web site was only targeting students, seeing the massive potential in a wider audience, its officials decided to lose these boundaries in order to attract more users. The plan worked and after a rather bad first year, the next three years turned it into the number one social networking Web site.