Judy at Quilting With Ragdolls wrote a post about copying photos and text from other blogs. It's a thoughtful post and it inspired me to add a copyright notice at the bottom of my blog. It is scary that in some people's eyes that can take the words and pictures of someone else and claim them as their own.
The company I work for sells intellectual property - hundreds and hundreds of bits of information - and nothing leaves our office without a copyright notice on it. I just never thought I would have to add it to my blog. So I have a copyright now at the bottom of the page.