I use mediafire for my shares. Although they do present the occasional advertisement to install some PC Optimizer crap, I have never experienced an automatic download of anything from them. I have been prompted to download things in ads, but I just download the file that I went there for, and close the tab (or browser) window. They are a business and they make money by selling ads so they can provide the free service. I have no problem with that as long as I have the option of saying 'no' to their request to install things.
Adblocker works by analyzing a page's code structure and detecting when it has made a call to an external ad-server. If the code on the page is written so that the content is not called from an external source, then adblocker typically won't detect it. It may be more complex than that, but that's the basic premise of the extension's design.
- Billkwando likes this