Not really.
Most console browsers are behind in terms of HTML, Java, and Flash support.
Plus navigating through websites and the interface with a D-Pad and analog sticks seems more tedious than using my computer.
And if you don't have the gamepad keyboard, then it's fucking pointless. It's going to take you 5 minutes just to punch in each individual letter.
inb4highdefporn
Your shitty console only pushes a maximum resolution of 1280x720. Most HD TV's have a max resolution of 1366x768. Your TV simply stretches and fits the picture to the screen size.
honestly if i want to browse the internet ill turn around and use my computer. No need for a internet explorer for my xbox.