8. A method, comprising: at an electronic device with a display and a touch-sensitive surface: displaying an unsplit keyboard; replacing display of the unsplit keyboard with display of an integrated input area in response to detecting a gesture on the touch-sensitive surface; concurrently displaying a first text entry area and the integrated input area, the integrated input area including: a left portion with a left side of a split keyboard; a right portion with a right side of the split keyboard, wherein the left side of the split keyboard and the right side of the split keyboard maintain fixed positions relative to each other within the integrated input area during movement of the integrated input area; and a center portion with a second text entry area, the center portion in between the left portion and the right portion; detecting a gesture at a location on the touch-sensitive surface that corresponds to a location of a character key in the split keyboard; and, in response to detecting the gesture at the location on the touch-sensitive surface that corresponds to the location of the character key in the split keyboard, inputting and concurrently displaying the corresponding character in the first text entry area and the second text entry area on the display.
8. A method, comprising: at an electronic device with a display and a touch-sensitive surface: displaying an unsplit keyboard; replacing display of the unsplit keyboard with display of an integrated input area in response to detecting a gesture on the touch-sensitive surface; concurrently displaying a first text entry area and the integrated input area, the integrated input area including: a left portion with a left side of a split keyboard; a right portion with a right side of the split keyboard, wherein the left side of the split keyboard and the right side of the split keyboard maintain fixed positions relative to each other within the integrated input area during movement of the integrated input area; and a center portion with a second text entry area, the center portion in between the left portion and the right portion; detecting a gesture at a location on the touch-sensitive surface that corresponds to a location of a character key in the split keyboard; and, in response to detecting the gesture at the location on the touch-sensitive surface that corresponds to the location of the character key in the split keyboard, inputting and concurrently displaying the corresponding character in the first text entry area and the second text entry area on the display. 11. The method of claim 8 , wherein the second text entry area includes an insertion point, the method including: detecting a gesture on the touch-sensitive surface at a location that corresponds to the insertion point in the second text entry area; and, moving the insertion point in the second text entry area in accordance with the gesture on the touch-sensitive surface at the location that corresponds to the insertion point in the second text entry area.