Today at the Google I/O conference, the point was made that searching for something like an online chess game is easier on a phone than on the Internet. The current state of web-apps is rather anarchic, and Google doesn't like that. They believe it should be easy to create and sell premium web apps.
That is why Google has just announced the launch of the Chrome Web Store. This will basically be an App Store for your computer. Developers can sell or give away (with or without ads) their high quality web applications. Plants versus Zombies, the breakout app game of 2009, is in the Chrome Web Store now.
Apps in the Chrome Web Store can be made in a variety of ways, including Flash. LEGO Star Wars has even found its way into the web store. This awesome 3D game can be played directly in the browser. The Chrome Web Store promises to offer a lot more than any mobile-centric app store. It will work on Mac and PC and supports both free and for-pay applications.