Next time you were looking for an activity partner, please specify your ethnicity and/or country of origin, because a good chunk of Stanford affiliated folks are (sadly) as racist and dangerous as neo-Nazis. You may get several responses, but once they see your name and find out about your country or race, you won't see a second email from them. Yes, from the same people who expressed enthusiasm to be your partner in whatever activity you had posted. Welcome to Stanford.