Just an anecdote from my work day. As everyone here knows, the CTAs on your site are some of its more important elements. I'm working on an important form right now, and we'd created a very large red button with the word 'SUBMIT' on it, in large caps.
The more I looked at it, the more it made me think of a giant 1950s robot commanding, "Submit, earthlings; you have no choice."
I've never thought about this before, but the dual meanings of the word suddenly jumped off the screen at me (perhaps because of the bright red background of the button). People don't like to submit to others, typically. Maybe it's not the best word. I switched to 'Send It' and that immediately looked less domineering.
Maybe I've been working too much...
Edited by SEOigloo, 17 July 2011 - 01:44 PM.