I haven't tested on skype, but I was playing around on Bing earlier today. I like that it lists the sites that it gathered the information from, but in terms of being useful for work (writing articles, generating ideas, anything other than answers), I didn't find it much help to me.
But, if I put in "when is the best time to spray for mosquitos", it gives back a nice formatted list with bullet points and then references the sites it found the info on. That's helpful (for users).