Great idea, but needs some serious fine tuning. What is most annoying is that to confirm the donation for the website you're on, it reloads the homepage, even if you aren't on the homepage. Also, it seems to pop up every time you click off then click back onto that website, so pops up far too often. There's no way of turning it off permanently for a website, eg a website you use for reference that you will never make a purchase on, and that needs to be fixed.
Such a great way to raise money for your kids school, and a shame it's so frustrating to use or I think more people would install it.