<div class="blockquote"><p>your text</p><p>with a paragraph above</p></div>
would be an abuse ... Or at least, it's not semantically correct.
I think, the best way would be a syntax plugin. Either the bbcode (http://wiki.splitbrain.org/plugin:bbcode
) or a new plugin.
You are right with that - but it was the first possibility I thought of to get a "blockquote-like-element" - some days later I made a Blockquote-Plugin (see code on http://www.heine-wiki.de/Playground
) to have a better way to deal with blockquotes.
Concerning the "abuse" of blockquotes for discussions:
I don't think blockquote shold be used to show quotations from a discussion
BLOCKQUOTE is for long quotations (block-level content) and Q is intended for short quotations (inline content) that don't require paragraph breaks.
that's what w3.org tells about it. In printmedia and Sciences, for example Literature, Social Sciences etc. blockquotes are used to mark quotations, that extend three lines of text, whereas short quotations are printed inside the paragraph.
To handle a discussionstructure, in my opinion, a specialized list-Syntax would be the better way ;-)