Man I have freckles clustered all over my face...  they're melaninized cells and very noticable!
I have alot of freckles too. Ive always heard it was because I was Irish.
Yeah? People sometimes think they're moles, but thy are different than these and lentigines. 
Interesting. What are lentigines? Also what the difference between freckles and lentigines?
They are a small pigmented spot with a different pigment and a defined edge. They're harmless though!