For those of you trying to blog responsibly, there's a new image source available. Getty Images has made thousands of its royalty-free stock images available for embedding at no cost.
Getty is a commercial image/video source; professionals use it to purchase images for websites and catalogs and brochures. If you're designing something that's going to be published on the web, you have to be ethical about using other people's creative work.
So, for example, if I want an image of a puppy, and I want to make sure I'm using it ethically, I could go to Getty Images and grab the embed code, like so:
What you're getting there is a professionally photographed image, embedded in a legal, ethical way. Getty is probably letting bloggers use this service to increase awareness of the huge stock of images that they have for sale.
This is only available for embedding on noncommercial sites, so if your site is generating revenue from ads, it's not for you.