I always add an image where appropriate, but sometimes I don't have an image, so keep the content text only. But I'm starting to think it doesn't seem as friendly without an image.
So say I'm writing about widgetitis, I don't have an image of widgetitis, but I have lots of images of widgets. Do I just add that, or nothing at all? I have started paying somebody to create images for me, but sometimes it's too complicated to do.
What do other people do?