Lexi Revellian has written a helpful post over at BookBuzzr about How to Write a Popular Writing Blog.
One thing that struck me was
Use images – a picture is indeed worth a thousand words. Google images is a good resource; aim for striking images that are relevant (it doesn’t have to be in an obvious way).
I've started using Flickr for most of my images because they have a huge Creative Commons section, and that way I know I'm not violating copyright.
When you go to Flickr, you'll see a set of links across the page giving drop-down menus. You want Explore/Creative Commons. You'll then be offered a variety of licenses, you can choose any of them and click on See More. That will take you to a page of images with a Search box at the top and now you can search Creative Commons pictures for anything you like.
I know that Old Kitty takes her own pictures of Charlie every day - and very photogenic he is too! Where do you go when you want pictures for your blog?