RE: Responsive Design

I actually don't have a smart phone (gasp), but my fiance was trying to watch a clip on Hulu on his phone recently, and the phone basically freaked out. It knew he was on a phone and told him to download something, which ended up taking forever and it was a huge mess. I've wondered how phones know the difference, but I have noticed the m.facebook on his phone before... but I don't have to type it in-- it just does it automatically when I try to go to Facebook. I can't wait until all websites work like that-- it will make reading something on a small window at work MUCH more efficient. And Sarah- I have definitely noticed the slow/awful restaurant sites from phones, which is a huge bummer because other than facebook, that is probably what I use the web on a phone for most. Aaron or Jaime-- is this a lot more expensive to design? I feel like whoever mentioned limited resources (Sarah?) was probably right in that it could take some time before smaller businesses, like local restaurants, are willing to pay to jump on board.