I doubt anybody reads my impressions on these old ass shows, but I enjoy writing them anyways. When talking about episodes I generally write something like: "In Episode 4, the main character goes on a trip and meets an old friend along the way, but at what first starts off as a chance encounter ends up being more than that by the end". Do people enjoy those types of descriptions when talking about a show or should I not bother? I feel that its not really spoliery but still gives you a taste of what to expect, no different to a blurb I guess. In that sense, if you want to go in 100% free of any exposure you can just skip it outright, although screenshots might prevent that, but even then I generally try to make them as inconspicuous as possible, although I admit that I can take loads of them and it can be overwhelming, as you can see by my post above :$
I generally don't like going into details too much although there's value in postmortems and dissections of episodes/shows/films.