Orthodox Jews do not eat non-kosher food. Many also would not walk into a non-kosher restaurant because they don’t want a kosher Jew to see them going into the non-kosher restaurant and think that it must be kosher since that Jew went in there.
So even to use the bathroom, many orthodox Jews wouldn’t even walk into a non-kosher restaurant.
Which brings up the question, can a Jew who holds by not going into non-kosher restaurants, checkin on Foursquare to non-kosher restaurant?
As I travel on Amtrak back to New York from Washington DC, I am randomly looking for places to check into on Foursquare along the way. And I am specifically avoiding non-kosher restaurants or restaurants I do not know if they are kosher or not.
Jews, what would you do?
Non-Jews, you think I am crazy? Well, some Jews think I am crazy.
And many people think I am crazy just for using Foursquare in general.