Well, now I'm confused.
Why does your boyfriend have a Sky Broadband subscription but no computer? Wouldn't it be cheaper to for the TV-only option? (Excuse my ignorance about this aspect).
Returning to topic, I was able to glean from the
httpd website that it is a piece of software which helps you set up a home computer to act as an internet webpage server.
I see two possible motivations for a home-brewed website - 1. To make money selling goods or providing a service; 2 - out of the goodness of one's heart you want to provide a service or information or downloads for free.
Either way, you will get a lot of incoming traffic on your internet connection. Also, to provide a good service to customers, you want to avoid other uses of the connection which would make it slow down. One of the selling points of the s/w is described as a 'throttling feature' whereby the user can specify a list of network users or external websites and a restriction on how much load they can place on the phone connection.
I was thinking this might explain why you get a bit of AB usage but then it blocks you and asks for authorisation bu tonly when you are using his internet connection. All the advert graphics on each page add up to a considerable amount of data transfer, potentially slowing down his connection.
However, if - as you said - he has no computer*, then all the above is complete jibberish.**
* or any computing device which could include smartphone, tablet, games console or anything else where a BB connection would be required.
** or, while visiting his house/flat, you could actually be tapping into an unsecured wireless network being run by one of his neighbours, in which case all the security warnings about using your laptop in a cafe or airport apply.