Rules for labelling buttons
“The consequence of the two rules may be that you end up with buttons with labels that are longer than a single word. I think that’s much better than striving for single words that are either confusing (as they might be in our example) or infuriating (as in the many dialog boxes that inform me that some program has done something truly ghastly to my computer, and then expect me to click ‘OK’ as if I’m happy about it).” (Caroline Jarrett – Usability News)