As the content you can’t uses images from other sites if they are copyrighted. If you use images from other sites, you are violating the image copyright act. The resultant can be downfall in ranking and traffic. Some times de listing of the site happens. So if you don’t want to get penalized, never go against image copyright acts. Use your own images on the site and you will get the maximum benefit from the same.

DMCA is there for taking action against image copyright act and you can be awarded image copyright penalty for the same by the search engines. If you are using images of others, you can give the URL of that site below the image use. This way you can not be going against image copyright act. Or you can give a hyperlink to the image.

If you are violating image copyright act, you may sometimes have to under legal process. The site or company whose image you are using may take legal action against you. But it generally doesn’t happen, the sites write a mail to remove there image from others site. But the most important factor is going against image copyright act, gives you image copyright penalty. And this result in lowering downs your revenue generation. SO never fall under image copyright penalty to rank well on the search engines.