:-1: I don't think Cake should start doing this because a blogger says so :)

Makes fine sense to me to include it, it makes it very explicit that this method will not return anything at all, rather than scanning and deducing that nothing is returned because its left out.

If omitted it can be two things

1) nothing is returned, and its by intention
2) something is returned, but the developer forgot about it in his hurry

I would much rather see `void` and know the developer thought about it, and decided that the method shouldn't return anything.