A lot of confusion comes with choosing pictures that are safe to use on Bubblews.
You can't use a photo that someone else has the rights for, unless you have their permission and can prove it. The issue lies in the fact that your content on here is monetized. Using someone else's picture would mean you're making money off of something that is not legally yours. The absolute most important thing about a picture you use on Bubblews is that it must be free for commercial use.
It's easy to make mistakes with choosing photos you don't have the right to use, but the consequences are high - like not being paid by Bubblews because you've used copyrighted images. It's best to ALWAYS check the credits on photos; you need to know that the photo is free for you to use and that it's not under any copyright.
"This image is of a poster, and the copyright for it is most likely owned by either the publisher or the creator of the work depicted. It is believed that the use of scaled-down, low-resolution images of posters to provide critical commentary on the film, event, etc. in question or of the poster itself, not solely for illustration on the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation, qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content for more information."
In other words, they think it's okay for you to use the picture, but they're not sure. If you're not sure, DON'T USE IT.
My go-to website for free, non-copyrighted photos is www.morguefile.com/ . There, they have "free high resolution digital stock photography for either corporate or public use," and you're free to use the photos for commercial purposes. That means that if you use their pictures on here, you're good to go!
Always cite your source at the end of your post. Even if you're the one who took the picture, it'll make your life (and those of the Bubblews admins) a lot easier if you just cite all of your sources. A simple "Photo By Author," "Photo By (insert link or website)," or "Photo used with Permission of (insert name)" will suffice.
Best of luck with those photos!