I'm in Australia and I have been donating blood regularly (every 6 months), mainly as a way to control the body iron level. I haven't got any problem, either from the blood donation itself, or from the system that collects my blood.
It's not clear from your post whether your friend is asking for your donated blood/plasma directly, or just a general encouragement to donate blood because he is receiving plasma transfusions. If it is the former, I would definitely consider it. Otherwise, I would not change my donation schedule.