Comment on Criteria for Determining Predatory Open-Access Publishers (2nd edition) by Jeanne Adiwinata Pawitan

Dear Mr Beall,
I do not agree to avoid Trade Science, as until now, they do not charge authors. Even if it is as you have supposed, that they will switch to author-pay model, I think authors can take advantage of the free of charge period. However, when your supposition has become a reality, i.e. they begin to charge author, then I agree with you, to avoid them.