Actually, "--" is an accepted emdash replacement, and is slowly becoming preferred since it is generally easier to type (not having to remember the code for it, and the fact that it is readable in plain text). The hyphen with spaces is incorrect, however. The main this is to differentiate the emdash from the hyphen by making the former longer. Note: we should probably change the Standards thread to reflect that. Even though -- looks kind of ugly.
On another note, "this Pokemon 2HKOes everything that doesn't resist it's STAB moves" and sentences along that line should start to phase out of analysis writing. They are overly generic (ie don't really add anything useful), and generally aren't left with specific examples. If for some reason you have to use something like that as an intro sentence because there is literally nothing better, at least support that statement. "...STAB moves; for example, the common OU Steel-types Scizor, Ferrothorn, and Forretress (or whatever) take over 55% regardless of weather...." or something along those lines to give the reader something to grasp on to.
[21:11] <&Oglemi> opera da best
[21:12] <%Birkal> I love opera
[21:12] <%Birkal> our college put on cosi last year; it was great
[21:12] <%Birkal> OH MY GOODNESS
[21:12] <%Birkal> THIS CONVERSATION IS ABOUT WEB BROWSERS
[21:12] <%Birkal> =X