Don't know why the link doesn't work for you 4getalot ;o) naughty stuff? nothing of the sort..lol.
''A mole (or melanocytic naevus) is an abnormal collection of pigment cells present within the skin. These cells are known as melanocytes. Moles are extremely common. Most people are born with a few moles and develop others during their lives.
Keep an eye on your moles. Go and see the doctor if they begin to itch, increase in size or change colour.
What causes moles?
Most moles are simply the result of a harmless proliferation of the pigment cells within the deeper layer of the skin. A few of these moles, called congenital melanonaevi, are usually present at birth. But most develop spontaneously or are caused by exposure to sunlight and tend to appear on those areas of the skin that catch the most sunlight.
Most of these moles appear during the first 20 years of life, although they may continue to develop into the 30s and 40s. However, the majority disappear with age.''