Nowadays, I see this usage a lot. I don't know if it was this common in the past.
For example: "one of them people"
When I did a research about it, some people say it comes from a dialect of British English. And some says it is a "non-standard" usage.
I see this usage in Canadian English also and seems like some people use in a sarcastic way.
Moreover, I saw in a song title as "one of them days". And I saw in the book called "A Broken Promise" as "Now my mother become one of them people."
And finally, Wikipedia says that it is a usage in Appalachian English (a common name for the Southern Midland dialect of American English):
Pronouns and demonstratives
"Them" is sometimes used in place of "those" as a demonstrative in both nominative and oblique constructions. Examples are "Them are the pants I want" and "Give me some of them crackers."
What would you say about the usage of this word? Is it correct? Can we use it in daily speech? Can this usage go beyond a specific dialect and be used in other dialects, regions etc.?
Is it really originated from Appalachian English? Why did this usage become popular among other English speakers?
Note: I already saw this question: What are the grammatical rules for use of "these", "those", and "them"?
But it only says "ungrammatical" there. This question is specific to this situation only and there is more to it.