Spend the few dollars and get the Roalty Free images from a respected site. Personally, I use www.bigstockphoto.com
which has thousands of images. You can purchase one off images, buy a few credits or what we do is have a monthly subscription to allow unlimited downloads. Having access to images that you KNOW you're allowed to use will save a lot of money in the long run.
DMCA's are not fun. Spend the $35 and download 10 images if you only need a few. Those credits are available for 12 months too!