the forum i found is http://www.beardeddragon.org/
they are for sure very fragile animals, you cant feed them anything bigger than the gap between their eyes, or it will cause impaction ( cant digest and gets stuck in bowels and they die)
im going to get a baby, and they eat up to 50 crickets a day until they become adults, where they eat locusts and cockroackes ect...
im going to build the cage (enclosure) myself, and i know exactly my plan!

they have to stay at a minimum 65 degrees (Fahrenheit) all the time, or they are at risk of dieing!
bearded dragons can live as log as 10 - 12 years, so mikeh your friend must have been suffered from impaction!

cheers guys,
Matt