http://ethereumworldnews.com/poloniex-changes-rules/

The biggest change of all was made to Poloniex’s Arbitration section of the ToS. There have been quite a few rumors circulating regarding the potential insolvency of the Poloniex exchange. According to the new terms, all users trading on the platform waive their right to participate in a class action lawsuit or class-wide arbitration. This addition is not uncommon for cryptocurrency exchanges, yet it will likely only fuel the rumors.