I don't do mobile searches but I just sent a question to ChaCha from my Sansung mobile phone (nothing fancy like a smart phone, but a basic clamshell) to see how it works.
So far, I've burned three text messages, one of which appears to be an ad of sorts.
"Trumps" isn't the word I would use, in this case.
EDIT: Ok, it took a total of 6 text messages to get the answer to the question: "How many songs are on the 'off the wall' album?". Two messages were sent from me (one to ask the question and one to stop the replies) and four were sent by ChaCha, one of which contained my answer.
Peace...