What defines a cryptocurrency? Why is a virtual currency such as World of Warcraft gold not listed on these sites? Obviously, it would be difficult to calculate the value of all the existing gold in World of Warcraft because of lack of data on supply figures, but another key reason why this type of virtual currency is not Included on crypto-currency comparison websites is that gaming currencies tend to be too centralized to be able to be compared to real crypto-currencies. But how much should a digital currency be considered a cryptocurrency? The seemingly sufficient level of Bitcoin in terms of decentralization and resistance to censorship has allowed it to succeed where countless other digital money systems have failed. So that’s an interesting aspect of the technology that needs to be preserved. In other words, that’s why we are here. That said, it is unclear whether a number of other high-level “cryptocurrencies” are more similar to Bitcoin or World of Warcraft gold. If the main advance with Bitcoin has been the possibility for potentially anonymous actors to order transactions and prevent double spending, should not this be the threshold by which cryptocurrencies are defined? One might think so, but some of the major current crypto-currencies (measured by market capitalization) do not meet this basic requirement. Given all this, it may be prudent for cryptographic asset comparison websites to create stricter inclusion standards, or at least to make clear that not all “cryptocurrencies” are created from same way.