This can help make it easier for you to better curate too, by seeing all the forms of content viewed now, in the one tag and that's what I do with #battle and gaming posts by also using the frontend for it.

So OC for gaming would be as long as it's written well, something they are doing themselves to share gameplay and their own thoughts etc and it isn't copy pasta, that would be acceptable? I know I would like to use the tag now I know about it, I don't expect the curation but sharing the fun I have and bringing some nice, good content for others to share with me is always great to me!