Even though Geocities is a good web server in general, it has some very ugly ads. You can, however cover them by putting something where they are using CSS and giving it a high z-index. Found that out by accident. No example tho, sorry.
They can afford to run by providing the Yahoo! Search engine, yes you shouldn't really break the terms of service.
Though using z-index doesn't, and neither does it affect their adverts since CSS can be disabled by the user but the advert still gets served - morally it's probably wrong but ethically it's just using creative CSS.
im gonna have to agree with robbie.... only because he... kind of... agreed with me anyways, i, nor anyone i no, clicks on ads. theyre ignored completely. to be used, there must be a legitimate link/ affiliation, etc.
i've referred geocities to about... 8 people i can think off the top of my head anyways so my debt is due especially since i barely use any of the webspace given... maybe about 15%, rounding up. (less than two mb out of the 15mb given)
as for making money? theyll make money when i get a domain, which ill do when my site is on solid ground and has a hefty bit of content.
Maybe you should consider paying for your hosting if you don't want ads...
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"And there's Bill Gates, the...most...famous...man in the...ah...Microsoft." -- A TV commentator for the 2000 Olympics.