BitSync is the most promising of these, but I am still very disappointed that the code is not open source. This was a huge mistake and has stunted the growth by a considerable amount. An open source code base could have seen a huge amount of adoption in the form of standalone apps and platforms/apps that were built on top of it.
What are the chances we can get a post filter that ignores any story with a number in the first or second position in the article title? “Three Things”, “Top 8”, “Nine things you need to know about nginx” etc.
People should just downvote spam.