I have been a member of a Yahoo group called 'UVB Meter Owners' for a while now and figured I'd mention the group here for those who wish to gain a better understanding of UV lighting. Since joining the group I feel I have a totally new understanding of how UVB bulbs operate and feel it's important for every reptile keeper to understand it as well. Some of the group members/creators include Dr. Francis Baines (UVGuide) and Bob MacCarger (ReptileUV), both of which have taken reptile lighting to new and improved levels. Dr. Baines has dedicated much of her time and effort towards the study of reptile lighting and has published results from various bulbs and bulb implementations, all of which can be accessed through the group. I would highly suggest to those who wish to provide the very best for their animals to check the group out first hand.