Trace Mayer gave ShadowCash another shoutout in a recent video May 1st, at the 31min mark:
https://youtu.be/wmY-f1SX7aU?t=30m45sTrace is a really smart guy and early Bitcoiner interested in anonymity. He promoted Bitcoin as an investment since the price was about 5 cents to 25 cents per bitcoin. He has invested in many Bitcoin businesses as well like Armory, BitPay, Kraken, SatoshiDice, and many others. He also has the websites runtogold.com and howtovanish.com
He was also mentioning homomorphic encryption, cryptonote, and indistinguishability obfuscation for more anonymous currencies. I know Rynomster the lead SDC dev mentioned that homomorphic encryption was one of the things they were looking at for the future, as well as SNARKS.
For anyone interested, Trace was mentioning ShadowCash in another video a bit ago as well(18:40 mark):
https://youtu.be/50_NfitNTkI?t=18m39sHe was mentioning ring signatures, zero knowledge proofs, SNARKS, and the ShadowCash whitepaper. He says that ShadowCash is an example of where the libertarians may need to go as Bitcoin becomes more mainstream and regulated. I think he is spot on with his analysis.
If anyone wants to check out some of his shows, he has the Bitcoin Knowledge podcast, it seems pretty good:
http://www.bitcoin.kn/