When Google Penguin was introduced, this had serious implications on duplication of content. It is too easy to copy someone else’s content and then add a little note at the bottom that credits back the original author – this tactic is now frowned upon and will have a detrimental effect on your Google rankings.
But what happens when you have a guest blogger producing an article for you? How do you know if they have not just copied content from another source?
I would highly recommend registering with Grammarly.com. This software enables you to check for plagiarism. We use the rule that if the article is less that 20% unoriginal then it is good to go. Any more than 20% then we bat it back to the author and ask them to make changes.
Do you check for plagiarism?