I went through the thread again and there was not a single argument WHY it is a scam. The quality of the discussion here is so embarrassingly low. There is a critical discussion on the concepts on the bitshares forum here
https://bitsharestalk.org/index.php?board=3.0It is indeed a financial experiment, if you dont want to take any risk, stay away from it. But don't call it a scam. Bitcoin was also an experiment.
There is a huge team of BitShares developers in Blacksburg, Virginia which are all publicly known. There are well known and respected supporters. Bo Shen, who is a founding member of the Bitcoin Foundation in China, is a supporter and member of the BitShares team.
http://bitcoinmagazine.com/about-us/So please join the discussion and bring up critical points why this all might not work. But don't be so blunt to call it a scam! The market mechanisms are definitely complex and doubts are justified why it could not work, like with any experiment. But not everything you can not intellectually comprehend is a scam.