deviantART is another community that freely offers a ton of stock photos for use in a wide variety of places. deviantART (abbreviated dA) launched way back in 2000, and has over fourteen million members and has over 140,000 new submissions each and every day. Now, not all of these are photographs, and they're certainly not all fair-use or stock photos. Still, deviantARTists have banded together to create a rather respectable stock photo section.
You're going to want to sign up for a deviantART account, which takes a few minutes and e-mail varification. No need to pay for an account; a free one will suffice! Once you're a bonafide dA member, you can search the site much faster. Please remember, however, that because deviantART is a mostly community-run website of artists, there is a chance that you may run across nudity, violence, or other things. There is an option to turn off images with mature content in your user profile, but please browse with caution if you think you will get offended!
You'll find a link below that takes you directly to deviantART's stock art community. Simply searching wherever you like could easily get you in trouble as most art is copyrighted by default, so don't skip this step!
Now that you've reached dA's stock photography portal, you're free to search as you would like. Go ahead and type something in, like business or teamwork.
Clicking on a thumbnail will take you to the image page where you can download the highest resolution image available. Be sure to scroll down to the artist's comments (directly below the image) and see if the artist has any special rules for using his or her photo. Most dA artists don't mind if you use their images for personal use, but it is worth knowing that some artists on dA don't want their work used off-site. It only takes a second to check out the artist's comments, so don't skip this step!
Be sure to leave a comment thanking the artist for his or her fantastic artwork, and it doesn't hurt to add the featured piece to your favorites, either!