Seems to me a server that can push content without a request will waste bandwidth on unwanted content.

Leave me alone and stop wasting bandwidth.

Nor does he plan to waste bandwidth downloading the video of President Clinton's testimony when it is made available this week.

It is a very efficient means to package information across a network without wasting bandwidth.

But unless and until I learn more, I will not waste bandwidth in talk about it.

However, in RF communications this would waste bandwidth, and only tightly specified frequency bands are used for single transmissions.

Naval phones didn't waste bandwidth on visuals; Mon had been only a voice when Daniel spoke to him a moment before.

You didn't want to waste bandwidth.

They prevent undesired "inline linking", which can waste bandwidth.

Presumably their customers don't want to waste bandwidth, either, so it's in their best interests.