Possible Duplicate:
Orthodox Visits to Other Denomination Sanctuaries
I have noticed that in the two years that I have spent in the Jewish community, that Orthodox Jews say that they would never step foot into a Reform Synagogue, what is the reasoning behind this? Is there any hallacha that states that you shouldn't go into an Reform synagogue?
Note: My title is a bit weak, if anyone has any ideas of another title, please comment it.