Some unicode symbols trigger browsers to display text as RTL. No big deal.
As for the discussion at hand, the top button serves no useful purpose at all. Not even a little. It lets you get to the top of the screen, that's it. Except there's about 10 different methods of accomplishing this, with or without a mouse button or keyboard, built into your operating system and browser already. It's clutter that serves no purpose, which we've avoided with 3.0 in an effort to streamline the user interface and make it easier for novices. Some users, when they see 15000 buttons on a row, tend to just ignore them all (guilty!). Now, you only have icons relevant to the data point (e.g. for posts, icons related to that post, of which "the top button" does not qualify).
Meh, this has been debated to death. Suffice it to say, Rikki has had no intentions of bringing it back, and I don't blame him. ;)