I would guess that all of these methods of communication would need to be approved by way of a By-Law before they were implemented.
Some considerations: It would be unreasonable to exclude some people from access to information either due to their inability to afford internet access and/or a computer, or their lack of computer skills. This form of communication may negatively impact the poor, the disadvantaged, and the elderly.
If these issues can be sorted out then it could be a good idea.