I just noticed on my Mavericks' Finder today that there are two different Applications folders. One located under Main HD:
And the other one at Main HD -> Users -> Amit:
What's the difference between the two and why is one full while the other empty? Also, I did notice that my Main HD no longer shows the Users folder even though it's there. The Users folder wasn't always invisible. While it's no big deal, I am really curious as to why it would suddenly go undercover without me doing anything to it!