As there are only 140 characters permitted, people are likely to use "text speak". This reduces literacy as proper spelling isn't practiced.
Increased literacy.
Literacy Rates increased. ~
Literacy rate increase
more people read newspapers then before
The literacy test was intended to prevent African Americans from voting.
The Education Act of 1870
more people read newspapers then before
more people read newspapers then before
Marcela Ballara has written: 'Women and literacy' -- subject(s): Economic development, Education, Effect of education on, Literacy, Women
Literacy rate increased
more people read newspaper than before
Robert C. DesLauriers has written: 'The impact of employee illiteracy on Canadian business' -- subject(s): Business enterprises, Effect of functional literacy on, Industries, Economic policy, Literacy, Functional literacy, Personnel management