Ask HN: (Twitter API)-Can I hide user name of the person who tweets

I am thinking about an app based on twitter(plus other sources) to show info on basis of certain keywords.For free users I want to hide the name of the person who tweet and will provide indirect communication between the member and the guy who tweet by using a intermediate channel. For paid there will be no such restriction. Now,I am wondering whether it's legal or I am gonna violate Twitter ToS? Please guide. Thanks