For nearly 6 months now, I've set up a regular £2 donation to the Wikimedia Foundations (Wikimedia Commons) which doesn't sound like a lot but the £2 does go to help the organisation, for instance; it helps pay for the servers, bandwidth, technologies, staff, and volunteering opportunities to help keep Wikimedia's resources alive; and since I'm a blogger and I use photos under Creative Commons and non-copyrighted licenses in my blog (as I'm a law-abiding citizen), this is something I am very passionate about. I donate to Wikimedia Commons as it keeps the free media, well... free. This sort of copyright free legislation and the use of creative commons licenses gives me the resources to help make this blog possible! Also; if nobody donated to the website, how would the server space be funded? Wikimedia Commons would have to be a subscription service as would Wikipedia if Jimmy Wales didn't persuade you to donate. (I'm a Wikipedia donor too!)
I don't want this blog post to turn out as an advertisement, but Wikimedia Commons has a vast bank of media files that are Public domain, Attribution, and Attribution-ShareAlike photos; the majority of the photos for this blog are one of these 3 licenses (most of them being Attribution-ShareAlike).
The primary licensing I use for my blog are just Attribution-ShareAlike but come under 3 separate licenses. Attribution-ShareAlike 2.0 Generic, Attribution-ShareAlike 3.0 Unported, and Attribution-ShareAlike 4.0 International. These licenses are the baseline for creative commons media and if I find photos on Wikimedia Commons with one of these 3 licenses (or even Public Domain) I can use it for the blog.
Look on any photo in one of my blog posts, it will have a caption underneath with who the photo is from and the license used. Video Magazine does a good job on explaining Creative Commons for those who are looking to create videos, take a look below: