单个图像文件，用于存储页面上的所有小图像

In one of the recent Stackoverflow podcasts, Jeff talked about having a single image file having all of those tiny images that are all over a page and then cutting it with CSS so that all the images get displayed correctly. The whole point is to reduce the number of server requests so that the page gets loaded faster. I was like "wow, that's really cool, I could really use this in our product"., Je