Is wifi in bedroom dangerous?

Comparison of electromagnetic emissions:

Source	Position	Average	Maximal
WiFi Access point	31 cm from head	0.1 mW/kg	4 mW/kg
Apple iPhone 3G	3 cm from head	13.9 mW/kg	1300 mW/kg
Allowed limit		250 mW/kg	2000 mW/kg
Human	in your bed	1000 mW/kg	2000 mW/kg

That means that WiFi typically emits less than 1% of an iPhone.
See pubmed for the source. The emission from a human body is calculated from Planck's law.