[fiter]

Ignoring pushed ad data ia very different from never requesting those ads as far as available bandwidth and data metering are concerned.

[detaro]

Clients can refuse pushed requests (e.g. if they match filtering rules), so it's not like the server will push the full files through. It'd be interesting to check if clients do take e.g. OS settings about metering into account and disable push entirely to even avoid the initial transfer.