Every winter, some websites run snowstorm.js as decoration. Yes, it is a festive and cheery thing. It used to be fun back when we all had tiny 1024×780 screens. But now I have a huge, high rez screen, and my computer will try to render all the snowflakes. Some people set the snowstorm to high intensity, it makes my computer overheat and the cooling fans run at high speed. Some people run the white snow over a white background with black text. The only way you can tell snowstorm.js is running is to watch random pixels of the text wink on and off, as the snowflakes drift past. It makes the text illegible.
Please stop using snowstorm.js.