Sigh. You know full-well what I am talking about. Discussing it in terms of what is technically occurring does not achieve anything- Facebook is a service. The service is provided to you for free in return for showing you advertisements. If you block those advertisements then you are depriving Facebook of the means by which they pay for your presence on their service.
No, it is not a direct payment. Yes, it is a transaction.
Right, but it's worth pointing out that business models reliant on browser-requested ads are based on a faulty assumption that site owners control clients. Does Facebook's TOS include a statement to the effect of "the user must make a best effort to download all resources linked from each page"?
It's more like I want to go to the store, so I invite the store to send me a driver who will use my car to drive me to the store. The store accepts my invitation, but when the driver shows up he wants to invite a bunch of hitchhikers into my car but I politely decline. Meanwhile, I'm driven to the store.
Your bus analogy assumes that Facebook owns and operates my browser. That is incorrect.
These analogies are stupid, but in your example it's more like you invite the store to send a driver and they say "sure, he's going to bring five people with him", you say "OK, fine", then when he arrives you forcibly eject the five people you agreed to ride with.
But like I said. Analogies get really dumb when you get too deeply into them.
This isn't really relevant to Facebook. Facebook ads are pay-per-click. If you don't click FB ads, they don't make any money anyway. Also FB serves their own ads from their own servers, so you can't just block the ad servers.
If people are annoyed at ads they should stop visiting ad servers. Hence, AdBlock and Ghostery.