Has a third party reviewed the dark send code yet?
Kristov Atlas did the Darksend code review, you can read about it here :
http://blog.anonymousbitcoinbook.com/2014/09/darkcoin-code-review-results/The issues that came out of that review were addressed in a RC5 update (most issues had to do with our two client pairing on Testnet, on Mainnet that changed to
three client-pairing and also other issues were adressed in that update to make a better anonymization possible).
More information about the update / reply of Dev Team to Kristov Atlas code review here :
https://darkcointalk.org/threads/reply-to-kristovs-paper.2325/