Don't compare Blockchain.info. Bitcoins lost through Blockchain.info is very big and no, many of them were *not* due to users' faults.
if you are referring to the reusing of the "R values" by blockchain.info . i have to say, it could be easily avoided if the simple rule of "always use every address once" was followed, it could have been prevented.
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Reusing addresses are alright except it compromises privacy. Reused 'R values' were exposed due to Blockchain.info wallet's bug, not user's fault.