I try to keep an open mind about these things, but switching browsers is not a decision to take lightly, and as Chrome has improved over the last couple years, I've had a harder time considering other options. Even though Internet Explorer 9 is light years ahead of its predecessors, and Firefox 4 is looking sharp with a new interface, I won't be picking them over Chrome anytime soon. Here's why:

Web Store and Web Apps

Since Google in December, I've taken a liking to the whole concept. It's part a discovery tool for new web services, part and part quick launch tool from Chrome's home screen. The Web Store is a case where the whole is greater than the sum of its parts, and now it's something I can't do without. We'll see if when it releases its own web apps platform.

Pinned Tabs

Although IE9 lets you pin tabs to the taskbar in Windows 7, it doesn't let you pin tabs within the browser itself. Both Chrome and Firefox allow this, so your favorite websites can hide in a tiny corner at the top of the browser. The difference is control: Firefox doesn't give you a way to automatically open certain websites as pinned tabs, but with Chrome, any web app can be pinned whenever you launch it from the home screen.