I think minimaps can also be great at improving on the 'preview' function of the classic scrollbar they iterate on. A scrollbar can tell me how long a page is a

I think minimaps can also be great at improving on the 'preview' function of the classic scrollbar they iterate on. A scrollbar can tell me how long a page is and, therefore, give me an idea of whether I want to continue reading or not. But a minimap can help to differentiate between the "short article followed by pages of comments I can ignore" case and the "article far too long to even bother with" one.