about few letter names

[Adrenalinas]

i wanted to ask something about these names...is it rare when it only has 1-3letters?not 1-5?and if its only random letters,and its 1-3 letters,is it still rare?and can that name be with letters and numbers too?

 

[venom]

I'm quite sure that it's considered "rare" when the name is 3 letter's or less, and has no number's in it. I think that is it, im not entirely sure.

 

[Macroman]

These days any name with 3 characters is considered rare, names with only letters are more rare though.

 

[Phatmat]

In most peoples opinion:

1 or 2 letters, no numbers = Very rare
3 or less letters with no numbers = Rare
4 letters with no numbers = Rare only if its a proper meaningful word
5 letters = Not rare, even if it's a word