I don't know what Bitcoin can do in regrds its relationship to SR, maybe doing nothing is the best thing right now.
Who is Bitcoin? How can it "do" anything? Put a statement on the website that BTCs are not to be used for transactions that are illegal in their country of origin or destination?
Implementing harm reduction into its business model is not only the right thing to do, it also gives SR more credibility as a viable alternative to the street.
I'm all for harm reduction, but the US does not have a smidgen of sense when it relates to drug warrior crusading. If you think packaging vicodins with instructions for doing a cold water extraction or telling people not to trip for the first time without a sitter is going to draw heat off of silk road, I think you're wrong.
Those of you that think bitcoins shouldn't be used for illegal transactions have a golden opportunity. If what you say is true, then fork the project, start mining, and when the inevitable BTC shutdown occurs you will be in perfect place to offer people a perfectly safe and centralized peer-to-peer currency.