If you are reading this now, you are on the internet, and therefore have probably used Wikipedia. Everyone I know uses it, and uses it a lot. It is one of the few websites on the internet subsisting just on donations, and for how often I use it and how important it is, I really owe it to Wikipedia to pay a small fraction of their server costs.
I donated to Wikipedia, and if you use the site a lot and find it useful, you should donate to Wikipedia too.
It’s pretty cool that all of this information is out there for free.