Why my refrigerator leaks the water at the bottom

Hello all,

Today, I just realize that my refrigerator has sound of dropping water. Then I open my freezer and then I saw some water dropping from the top to a hole at the bottom of the freezer.

http://i51.************************/15r16ya.jpg <= please see attached image

Question 1> Is it a problem? Because I can see some water leaking outside the tray.

Question 2> I don’t use refrigerator to produce ice or filter water, can I close the water valve at the back of the refrigerator. Will this damage the product?

Thank you

http://i51.************************/15r16ya.jpg

This is the link.

http://i51.************************/15r16ya.jpg

http : // i51 . tinypic . com / 15r16ya . jpg

I don’t know why the forum cannot allow me to post an image URL