Latex-Suite ships with the following smart keys:
Smart Backspace. Pressing <BS> in insert mode checks to see whether we are just after something like \'{a} and if so, deletes all of it. i.e, diacritics are treated as single characters for backspacing.
Smart Quotes. Pressing " (english double quote) will insert `` or '' by making an intelligent guess about whether we intended to open or close a quote.
Smart Space. Latex-suite maps the <space> key in such a way that $ characters are not broken across lines. It does this by first setting tw=0 so that Vim will not automatically break lines and then maps the <space> key to insert newlines keeping $$'s on the same line.
Smart Dots. Pressing ... (3 dots) results in \ldots outside math mode and \cdots in math mode.