I've been making use of GreaseMonkey for some time now. I found some scripts that i lie, namely Allow Password Remembering, Block youtube users, and Google Hit Hider by Domain. I've added a few of my own, Displaying Monk Levels and Checking Saint in our Book for ties, both for PerlMonks and now, Amazon Star percent to number.
I love Amazon Reviews, and those stars mean a lot to me. However, Amazon, in their great wisdom, decided to replace the useful numbers with useless percentages. Well, not useless, but compared to actual numbers, percents mean next to nothing. Who cares if 100% 5-star it, if that's only one person. I'd rather purchase a product with 80% 5-stars, but by a few hundred people. Sure, the number is on top, but who wants to do the math all the time?
To grab the number, the reviews page would have to be loaded for each star. So, i just did multiplication, which will be close enough. I guess the reviews page can get the actual number as opposed to multiplying, but this is good enough, and since it can be the same as the main product page which i did first, i'm not interested in putting in the effort to change it for the reviews page.