I must take exception to this kvetch from Julian Sanchez:
If you are not British or being deliberately pseudo-formal (and even this is kind of twee), it just looks silly when you write “whilst” instead of “while.”
That may be true, but my friends and I use it in regular conversation all the time. So while it looks silly to Julian, it looks normal to us. It’s just such a better word than “while”; it’s more aesthetically pleasing both when written and when spoken.