I like to use relevant and nice pictures with my blog posts. Here is a primer on web images on bloggingtips. Images play an integral part of the content of my blog. When you do use them, it helps to have them looking smooth. Here 7 tips for Better Integration of Images Within Your Content.
But now for some new discoveries of free pictures. PicApp is a photo resource site which has thousands of very high quality images which are available for bloggers to add to their blog posts for free. You can search for images. They are nicely displayed. When selecting an image your offered 4 choices. Embed your picture in your blog post, add it to a lightbox, send it to a friend by e-mail or share it with others on a social media site. The picture above this post is embedded with PicApp, you can select different sizes and lay out options before copying and pasting the image in your post. You can probably remove the link but for the sake of argument I have untouched the picture from PicApp.
This picture is from Public Domain Pictures for free! This site can be viewed in different languages. It also has sponsored pictures for 0.83 euro. Prefer these kind of images without Java and/or links. What do you think?
You have probably already heard about LIFE photo archive hosted by Google.
Search millions of photographs from the LIFE photo archive, stretching from the 1750s to today. Most were never published and are now available for the first time through the joint work of LIFE and Google.