And you guys are still wondering why the established media and financial world aren't taking cryptocurrencies seriously.  

I'm starting to understand why the Dogecoin founder is leaving this community. People like bigrcanada should make it their priority to first move out of their mom's basement.

You make the rookie mistake of looking only at the absolute price and ignoring the available supply of coins. For example, there exist more than 10 times as many SDC coins as CRAVE coins, so of course a single CRAVE would be valued higher.

To get a better ranking, multiply the price with the available supply. This is in fact what's done over at http://coinmarketcap.com/, with the resulting "market cap" determining the ranking. A market cap of 1 million for SDC isn't too shabby and way ahead of CRAVE.

Thanks for the clarification. Still, the encrypted chat would be a useful client feature for interacting with the other party when sending/receiving SDC.

Sorry for my ignorance, but may I know how the encrypted messages and the "ShadowChat" will be technically realized? If the contents of these communications will be stored in the blockchain for all eternity, then I could certainly see how people would be hesitant to adopt these features, considering that the encryption could somehow be broken in the not-too-distant future. On the other hand, if these communications are p2p only (i.e. between the two parties directly), then SDC would not be needed for them, right? Or am I mistaken?

Mir fällt da noch der Gridcoin ein. Der ist zwar nicht direkt energiesparend, aber bei dem wird wenigstens die Rechenleistung für wissenschaftliche Zwecke wie z.B. SETI genutzt, anstatt für zielloses Berechnen von Hashes. Finde ich persönlich toll. Leider ist die Verteilung der Gridcoins etwas fragwürdig (über 80% sind schon verteilt), so dass der Coin für nachkommende Interessenten weniger attraktiv ist. Ich überlege aber, mit meinem Desktop zu minen; dann tue ich wenigstens was für die Wissenschaft.

I can't speak for USD, but I did some research for EUR, GBP and SGD. For those currencies my preferences are:

EUR: Kraken (great exchange if you're European, not such much for Americans)
GBP: Cryptopay (accepts EUR and GBP; very good rates, though a 1% fee applies)
SGD: itBit (free SGD withdrawal and dirt-cheap deposit, if you happen to have a Singaporean bank account...)