During Shmoneh Esrei, i've always learned that the feet should be kept together, for whatever reason. However, lately i've noticed people who only keep their heels together, but not the rest of their feet. (Then there are the people who don't have their feet together at all, but that's of course wrong.)
Is this an acceptable practice?
Then there are the people who don't have their feet together at all, but that's of course wrong
why?