Finally, hiding messages widely amid otherwise-legitimate content makes it difficult for a censor to blockcommunication effectively without also causing significant disruption to innocuous users.
After a week-long Internet blackout intended to block all communication about the government's brutal political repression, Myanmar's Net users are regaining limited access to the outside world.
"A major stumbling block is the lack of cohesion and communication, between the policy makers in the relevant government departments, " says Ms Sibanda.
However Gabon's Communication Minister, Blaise Louembe, said he had acted to block the site before the service launched in order to "protect intellectual property rights".