Getty is a stock image provider. Typically, you pay for use of the images. Getty is now offering images to bloggers and web page authors at no cost – 35 million images are available.
It is important to understand the implications of image embeds. When you embed an image (see below), you are serving the image from the provider and not from the server you use to offer your blog or web page. The Getty approach does not offer you possession of the image.
What could be a limitation of this approach. I guess it depends on how paranoid you care to be. I heard one podcaster contend that the terms of service allow Getty to change its mind. For example, it could decide to terminate the service or possible monetize the service with ads. You can see that Getty identifies that it is the source of the image (see below). If you blog, the image would eventually disappear from your front page and might change without your awareness. I must say this would not concern me – few of those who visit my site use the search feature to locate old posts. Even if they did, what would be the harm in seeing an ad?