I share a lot of CC licensed content on flickr and vimeo. When I think of it, I try to use this content to improve wikipedia by submitting relevant media to wikimedia and using it to improve existing articles. I've mostly edited articles about places I've lived or visited.
This is my talk page
This is my wikicommons user page
I find it incredibly difficult to find the uploader tool for copying images from flickr to wikimedia. The wikipedia pages describing the existence of the tool rank far above the tool itself, which is very unfortunate. Here's a link so I can find it more easily: