I read (and very occasionally contribute to) a large number of subreddits that I'm not subscribed to. Recently I use redreader, but I'm the past I did it via th

I read (and very occasionally contribute to) a large number of subreddits that I'm not subscribed to. Recently I use redreader, but I'm the past I did it via the main Reddit website, simply by visiting /r/a+b+c+d..... to show all the posts on the same page.