Undisclosed Stops

I'm tired of booking flights and then finding out later that they're stopping someplace other than the city I want to travel to. The latest example is my flight back from the iMedia Summit last night.  On the way out, I flew from Islip to Las Vegas and then took a short flight from Vegas to Ontario, CA.  On the way back, I go from Ontario back to Vegas, I'm getting ready to board my connecting flight, and then I find out it's going to be stopping at Chicago Midway on the way back to Islip.  Thanks, Southwest!

How Southwest avoids disclosing this on the website is beyond me.  Yeah, I probably should have been tipped off by flight duration, but that's just sneaky.  Does Southwest think this is good for business?