Fucking blood service.
I donate regularly, whenever it's been 3 months since my last donation I start receiving letters from them reminding me to donate again, at lesat 1 per week. No problems with that.
What annoys the shit out of me is that I work in a Haemotology department, we are across the road from a NBS Blood Donor Centre, yet the process of actually getting an appointment is incredibly frustrating. When I tried to book online the system is shit (rather than telling you which appointments are available and letting you pick one, you have to enter a time window and then wait 24 hours to be told it is unavailable), the direct number for the place across the road has never once been answered by a person, so in the end I had to call the central booking number. Then the kicker... no appointments for 2 weeks!
Obviously I will still go and donate, but if they really are that desperate for blood, then they should make the whole process of getting an appointment a bit easier (after all it is a voluntary thing, thankfully for me my working hours are flexible so the time off work doesn't matter too much).
OK rant over, yes you should all go out and give blood, it's really important.