Damaging retweets

How many fake RSS Twitter handles are there and how much damage can they do?  @RSS_org for instance is not the official RSS handle. It has 6000 plus tweets (the two official handles @RSSonweb, @RSSorg have  barely 500 plus tweets between them) and when it retweets some sly poison from @friendsofRSS do the official handles disown them? On March 28 for instance there were three tweets urging the boycott of Muslim produced goods that @RSS_org retweeted.