Looking for a mac app to design beautiful illustrations automatically and easily Check out for example: 

 



I created these using Powerpoint on Mac, and then copying and pasting the image alone into a png and using that on a web page. What a pain and also the images look like Powerpoint images.

I bet there's a nice Mac app (or web site) that lets me create a wide variety of interesting illustrations that help me make a point. I have OmniGraffle which does some of this but I still have to be 'the illustrator'. Is there an app that works at a somewhat higher 'semantic' level?
Apples Pages.

I have used this only a little bit. But in most case it suits my basic needs. I have not tried to do anything really fancy. So cannot tell you if it is too limited for you