Example related question

Question

In this final example, why is it alguno and not algunos in the second sentence. Some in English would never refer to one thing so the English translation and the Spanish don’t seem to match to me. This doesn’t seem to be an example of the point before about “alguna revista” meaning some magazine or things like that.
 
Don't mix the indefinite adjective algún with the indefinite pronoun alguno. You can never use alguno with a noun!
¿Viste a algún famoso en Miami? Sí, vi a alguno.Did you see any famous people in Miami? Yes, I saw some.

Inma Sánchez · Accepted Answer

Hola Linguaphile 
This use of "alguno/alguna" is difficult to translate into English, but think of it as a "vague some", as  in "someone", "one or two",  "a couple",  so, confirming existence without committing to quantity or detail, in a vague way. For example, when you say in English:
- Have you read any books by that author?  - Yeah, I’ve read one or two.  (=Sí, he leído alguno)
- Do you bump into your old colleagues much? - Yes,  I run into the odd one [at events]. (=Sí, ...alguno)
- Have you visited many towns in that region?  - Yes, a couple / one or two / the odd one here and there. (Sí,  ... alguna.)
I hope this clarifies it a bit more.
Saludos
Inma