Photography

I still pay for Flickr - like others have said, it's very easy to share with other people, especially people not on the platform. There's also integration with Lightroom, which makes it incredibly simple to upload images. Stats are fun, despite the fact that I don't really know how to use the information to increase my own visibility. I found out that a college professor uses one of my images on their coursework website, which was neat (I CC-license all my digital work).

Potential downsides - a while back, the site changed their policy on "visibility" to encourage more public-facing images, so I think there's now a limit on how many images you can set to private or restricted viewing. (Maybe this has changed again, it doesn't really affect me much so I lost track of where this is at.) I also find discoverability a little challenging, especially with regards to Groups; specifically, I want to be able to browse lots of Groups and I can't figure out how to do that. The "community" stuff in general still seems to be lacking a bit, but maybe I'm using it wrong.