Being silence for 99 days, Digu, one of the most popular microblogging service is finally back in operation. What I heard about those microblogging services was not positive at all in the past a few days, though. My worry for Digu was the biggest news portal Sina which also launched its microblogging service. But my worry also seems not necessary because Digu is positively walking on its own way: Micro Social Game. So like the SNSs, can microblogging service be an open platform too?