Paper.li is service a that grabs links tweeted by the people you follow on Twitter and organizes them into a virtual paper for easy reading. This process happens pretty much every day and if you follow a large number of users, chances are that both your main and mentions timeline are totally spammed by the paper.li bot on behalf of users.
All you have to do is tweet the following line from your Twitter account.
@newscrier stop mentions
You can alternatively click on the 'tweet' below to do that.