send two transactions for the same amount of funds between the same pair of users in the same block. Previously the 2nd transaction would be rejected.

@blocktrades what is use-case of sending two identical transfers in the same block as opposed to a single transaction. Is this related to blocktrades.us, and why was this a priority issue?

most notoriously, the vote nullification feature

What is your stance on the current proposal for voter nullification?

users who sign up via facebook to “Share” that they've signed up to Steemit as a means of viral advertising

I am not sure if that is wise before the platform leaves beta. There is much work to do tweaking curation algorithms. The users experience when their votes have zero effect is still not ideal for mainstream viral adoption imho.