Yeah, I don't do twitter either. Don't see the use. I like things that make me more productive, not less. RSS falls in the former category.
I've been using it for about a decade or so, but it has fallen out of favor in general, and no suitable replacement exists, unfortunately. It still exists, but is not actively being developed and more and more things that would be suitable for RSS are being replaced with stuff like twitter. (I.e. a site or company could update users via RSS feed, now you have to subscribe to their tweets, which is annoying because you have to check them, which defeats the whole point for me.)
And yeah, I hate the "after the jump" stuff.. I find that I read less and less blogs that use that. Can't actually think of any now that do that I actively read. However I use Pocket (formerly Read It Later) for most of my blog reading, so as long as that can fetch the whole article, it ends up okay.
Interesting thought bo_knows. I don't know that I'd want them all mixed on one page, though I suppose if it was like Google Reader and there were separate sections you could click for each site, and see all of that site's unread forum posts. I think the difference is that for the forums to know which posts you haven't read, you'd have to be logged in. Meaning that GoogleForumReader type thing would have to know your logins for each of those forums. May not be a big deal if you use stuff like Mint, LastPass, etc. and trust sites with passwords to other sites, but that is one caveat.