What is PLR?
PLR stands for Private Label Rights. It is a concept used in internet marketing and derived from private labeling.
Any content (articles/ebooks) which has PLR offer you the right to use the as if it were your own. PLR contents usually include:
1) The right to modify or re-write the way you like.
2) The right to insert your own name as the author.
3) The right to sell or giveaway the content to others.