I've lost a few, I'm also having trouble sending a pm keep being told the recipients box is full FFS! I'll be glad when they finally fix this site its really pissing me off , just not as intuitive as the old one!
Some people have 7 or 8 and it seems to have no bearing on seniority, no of posts etc.
I thought Blue Sophist would have a page of them but he only has 4...?
I noticed the donor ones are in random order too.