A couple suggestions:
-Add some color to alternating panels in main view, just like alternating color in rows of a table makes it easier to view.
-'Principal Discussion Forums' (as in 'principal topics')
Emoticons are back!
curved bracket \(x^2 \) or USD inside square brackets [$]x^3[$] for inline math
slash + square brackets or double USD for display math, optionally with a LaTeX environment in it
\[
\begin{align}
x^2 &=1 \\
1 &= x^2
\end{align}
\]