Just realised it's actually a page, not a group, and I have no idea how I ended up being in charge of it but haven't posted on it since 2012. I've been wanting to get rid of it from my Facebook because it keeps popping up with all these notifications about views and how to improve it and whatnot.
As it's a page, I don't think others can post on it? I'm not sure. But a group would obviously be better. Can I just delete the page since nothing is happening on it?