Twitter on Monday began testing "buy buttons" that let people make purchases directly from marketing posts fired off at the globally popular one-to-many messaging service.
JOHANNESBURG - The struggle continues over high data costs.
Twitter users are calling for a social media blackout on Wednesday as a result.
They want the four major mobile networks cut their costs.
But there seems to be different opinions, with others saying they won't heed to the call.
There have been many attempts to force mobile networks to cut data cost.
Right2Know Campaign has blamed Parliament for failing to stop the networks from profiteering.