I first discovered photography in high school, but got more serious about in college. Flickr was a huge part of that experience; I could upload a photo and have comments on it almost immediately. I interacted with people who had similar interests in groups, and learned a ton by asking questions of other users.
The community that I once enjoyed on Flickr is no longer there – Twitter has replaced most of it — and at one point I closed my account. While I later re-joined the service, it’s just not the same, sadly. My 2013 Project 365 wasn’t nearly as fun as my previous two projects just because fewer people saw them.