z-z.cv is valuable because the repeated 'z-z' pattern in the domain name is catchy and easy to remember, making it stand out. The '.cv' top-level domain (TLD) represents Cape Verde, potentially appealing for businesses or entities connected to this location. The combination 'z-z.cv' could be interpreted as a shorthand for 'zero to zero' curated vitae, appealing to professional services or resume-building platforms looking to emphasize comprehensive and bespoke career services.