- GNOME has a preference to display labels on toolbar or not, see the interface tab in the appareance capplet
- changing all the button to don't display text doesn't seem the best move, you might want to change the default desktop option if you think that's really a good idea though
- the buttonbar can quickly have several items by putting there on an already loaded toolbar you will impact on the usability
Some comments there:
- GNOME has a preference to display labels on toolbar or not, see the interface tab in the appareance capplet
- changing all the button to don't display text doesn't seem the best move, you might want to change the default desktop option if you think that's really a good idea though
- the buttonbar can quickly have several items by putting there on an already loaded toolbar you will impact on the usability