This is a group started with the express purpose of trying to create a network among the many Probashi Bangalis living in the Bay Area. They all seem to congregate during a Durga Pujo celebration and mysteriously thereafter, go into hibernation for the rest of the year. At least that is the way I feel. Maybe it is a function of the fact that their numbers are so low that the probability of running into someone at random is exceedingly low. I, for one, refuse to believe that. Maybe it is my own f …