Marcus Wohlsen

SAN FRANCISCO — Facebook co-founder and former Mark Zuckerberg roommate Dustin Moskovitz is by many accounts the world’s youngest self-made billionaire. But the 27-year-old isn’t sipping champagne in the Caribbean. Instead he’s thrown himself back into San Francisco’s startup mix, even as Facebook’s looming IPO seems likely to send his wealth spiraling even higher. Moskovitz and his friend Justin Rosenstein, a former Facebooker himself worth $150 million, head a company called Asana, which just launched the first paid version of its online project management service. During a recent interview at their inconspicuous Mission District offices, the pair said they...

SAN FRANCISCO — When Adorian Deck was home sick from high school, he entertained himself like countless other teenagers have in recent years: He started a Twitter account.  Unlike other teenagers, Deck’s account became a sensation. Deck, under the handle (at)OMGFacts, tweeted random bits of celebrity gossip and quirky trivia. In less than a year, he had attracted more than 300,000 followers. Now Deck, 17, is suing a business partner who promised to take OMG Facts to the next level, but who the Northern California teen says deceived him into turning over the rights to his creation. “It was...

SAN FRANCISCO — A certain feeling is back in San Francisco. Murmurings of stock market riches. Twenty-something entrepreneurs as celebrities. Lamborghinis parked next to taco trucks. Driven by social media and mobile startups, the money is flowing in the city’s tech industry again, a decade after the dot-com boom minted overnight millionaires and its crash fueled a local recession worse than anything San Francisco has seen in the latest downturn. A recent tax break for Twitter and other proposals show city officials are hopeful that this latest tech industry prosperity does not portend another bubble and another bust. “It...