Can't tell ya any more (yet) since I just got hold of this and it's now "ruined" my Saturday because I'm such a geekette that I get lost in playing with news toys! lol
Pixabay is a great resource for images that are ok to use on your website.
I animate primarily Pixabay photos in software such as Ripl or Lumen5 to create short animations for social media marketing. Takes the static imagery to the next level. I share this valuable resource with everyone!
I've used Pixabay since the beginning. A few people I met on Squidoo (takes me back) were part of the development team. Because of that, I've stuck with Pixabay - watched them grow, and am very pleased to use their site for my stock images.