Here are some of our favourite links:

Acne (American Academy of Dermatology)
Alopecia Areata (National Alopecia Areata Foundation USA)
Eczema (National Eczema Society of UK)
Keratosis Pilaris (e-medicine USA)
Lasermed Advanced Laser Technology (SA)
Moles and Melanoma (AAD)
Psoriasis (National Psoriasis Foundation USA)
Vitiligo (National Vitiligo Foundation USA)

Search for various skin conditions in the following specially selected websites:

American Academy of Dermatology
National Skin Centre of Singapore
New Zeland DermNet