The name itself is a portmanteau of common internet shorthand:
Because the name sounds helpful and "official" within community sharing, it is occasionally used as a deceptive name for malware or adware . Users are often lured into downloading it thinking it contains a curated "pack" of rare content, only to find an executable (.exe) hidden inside the archive. Summary of the "Deep" Meaning credits_to_op.rar
A standard "nod" to the Original Poster (OP), used to acknowledge that the content inside was created by someone else and is being reshared or archived. The name itself is a portmanteau of common