GridTab has been released on Cydia for all Jailbroken iPhones and iPod touches running iOS 4.x. GridTab configures Safari to use a gallery system much like the iPad when navigating through different tabs. For those of you who like using multiple tabs, this will give you a much quicker and easier transition between them. Why Apple has not made this feature standard in iOS is puzzling, but leave it up to the Jailbreak community to bring it to you first!
GridTab is available for $0.99 on Cydia.