ChaCha

Whenever I'm out with friends, we inevitably run into a situation where our conversation is stuck because we can't collectively remember something (or there is an unsolvable debate). For instance:

"You're insane. Val Kilmer has never been in a good movie."
"Wait, he was in that one movie with that guy..."
"That helps."
"No, that guy who can't act."
"That narrows it down. George Clooney? Leonardo DiCaprio? Matthew McConaughey?"
"No, uh... crap... Robert De Niro!"
"Ooookay. So, the only good movie that Val Kilmer has ever been in was with a guy who can't act?"
"Yeah. Crap. What was that movie? Oh, it was Heat. You know, the one with Natalie Portman."
"Natalie Portman was not in Heat!"

Anyway, one of my friends recently pointed me out to a service called ChaCha [chacha.com], which allows you to text a question in, and get an informed answer in return (via texting). They have a page listing a bunch of recent questions [chacha.com] that have been asked.

I don't really understand their business model (i.e. how they intend to generate revenue). It's a free service. I have seen answers that have come back, and they don't include an ad. There are no ads on their website.

I can't wait until the next time my friends and I have one of our debates, and I ask them to hold on for 10 minutes while I laboriously type out a question on my phone to ChaCha. And how long will it take for this service to be widely used by students taking tests?