Mobile Safari is a great browser, and especially on the iPhone I haven’t managed to find an alternative in the App Store that can live up to Apple’s standards. It’s minimal, fast and does most of the stuff one could ever need - but the jailbreak community is always there to enhance stuff. If you open Cydia and search for “Safari” you’ll find tons of neat tweaks and mods to enhance the functionality of Apple’s mobile browser.
The next great tweak coming soon in Cydia is FullScreen for Safari, developed by the creator of Firewall IP. The tweak (which should be available in a couple of days) will add fullscreen capabilities and gestures to Safari, such as two-finger swipe to switch between tabs and two-finger swipe down to open a new tab. A preview is available on iSpazio (Italian), or you can check out the demo video below.