Is crying healthy?

The shedding of tears is often negatively looked upon by society. It is regarded as a sign of weakness, or a need for attention. I found 3 sites that explain what the purpose behind emotional tears are and the health benefits associated with it.

http://www.geocities.com/tcartz/crying.html

http://www.cyquest.com/good_cry.html

http://www.helium.com/items/339767-possible-health-benefits-of-crying

What did I gather from these? Letting them roll will leave you much happier and much healthier.