Market cap is the total value of all coins in circulation, calculated by multiplying current price by circulating supply. It's useful for ranking tokens by size, but it's only a snapshot at one moment in time. What market cap does tell you is relative scale—whether a token is bigger or smaller than competitors in its category. A higher market cap generally suggests more adoption and network activity, though that's not guaranteed. What it doesn't tell you is whether a token is a good investment or will go up in value. A low market cap doesn't mean undervalued, and a high one doesn't mean safe—fully diluted supply, unlock schedules, and actual utility matter way more than the headline number. Think of market cap as a popularity contest, not a health checkup. You need to look at token economics, roadmap, and real usage to understand if there's actual substance behind the crow-larious headline number. Market cap ranks tokens but can't predict their future—always dig deeper into the fundamentals.