Originally, the Robocoin machines displayed their bid and ask prices on the attract screen. They stopped doing that; the size of the spread (about 15-20%) was embarrassing.
Normally I wouldn't notice this (for example that Nova legend about a car that doesn't go doesn't really sound at all plausible and doesn't really sound like "no go" to me) but with all of the connotations of theft that people have put around bitcoins, "Robocoin" sounds like a terrible name to my hispanophone ears.
Still the context is important. When talking about some machine, it's obvious that it's meant for robot, not to say it's going to rob you - even if it's what it actually does.