~_~ may be it has equivalents, but I can not parse them enought with my user experience. It's like somebody ask me how many floppy disk do you usually use to install windows and what is the best case for them?
For example in usual forum if you write in some place you automatically receive notification to email. You do not need to subscribe manually, choose what kind of subscribe do you need, how many times in week do you want. Information moves very fast, just have fun and do not press tons of buttons for simplest things.
>Inside invidividual forums, you can (at bottom of page) select eg "Last 2 Weeks".
I spent about 10 minutes to see it, I never saw this buttons before. And its not permanent. For example, 99.99% of users do not use this feature, so threads dead on 0.01% just because of its button. Even if you use it, they are mostly unrelevant
Most of categories/subcategories not interesting->they are garbage
I say about usability, not possibility issues. You can register for example in xenforo and compare it