When a new tab is opened, by default, epiphany opens your set homepage in every new tab. Personally for me (and a few other people) this is a bit annoying and slows things down. I thought perhaps this should be able to be toggled in at least gconf-editor. However, I don't feel it is important enough to add any new UI elements.

Also, a good use for this would be for those that connect via their bluetooh modem through a cellular connection. Some people pay by the kilobyte and this would help reduce their bills.