Image Block adds a toggle button that conditionally blocks/allows loading of images on webpages. Blocking images results in faster browsing, especially helpful on handheld devices or slower connections. Recently in a review one user (thanks dellvin!) pointed out that Image Block is quite useful when you visit websites which show dirty and adult advertisements, while also containing useful information. If you are not sure of what you are about to see on a webpage, just block images to avoid possible embarrassment. It can also be used at work where your boss doesn't allow you to surf the web or social networking websites!! They look very different (hard to see which site you are viewing) with image blocking on.
After playing with Chrome for few hours, i must say that it is awesome! As power user, that usually has few instances of Firefox open, each with 20-150 tabs, I simply love Chrome. But, is it worth switching to? Is it ready for production and daily use ...