SAN FRANCISCO, Feb 11- When Square Chief Operating Officer Keith Rabois left his job last month, citing legal threats from a young colleague with whom he had a two-year relationship, he threw a spotlight on the risks associated with the freewheeling startup culture that many entrepreneurs cherish.
*Sales of Sweden's Minecraft game hit 20 million. STOCKHOLM, Feb 4- A pool table, a pinball machine, board games and Lego dot the offices of Mojang, the small Swedish company behind the wildly popular Minecraft video game, and one of its founders is wearing a tuxedo and purple tie on a recent "formal Friday".