Like any physical activity, especially those that are performed in the outdoors, there is always an element of risk involved. Barefoot running is the same in every respect. Although there are thousands of stories about runners who have successfully transitioned to barefoot running, sadly there are also those who have not been so lucky.
During the transition from shod running to barefoot running especially, there is an increased chance of injury, especially as a result of doing too much too soon, or using incorrect running form. This can be helped by finding a local, qualified coach to monitor your training.
The suggestions on this site are made in the spirit of sharing my own personal experiences and should not be considered expert advice. I am not a coach, nor a doctor. If you experience any injuries or have any pre-existing conditions that may be exacerbated by running barefoot, please be sure to discuss your individual situation with your doctor.