Quotation marks with post titles are used inconsistently in Flow messages. For example:

• "flow-rev-message-new-post": "$1 {{GENDER:$2|created}} the topic \"[$3 $4]\"",
• "flow-rev-message-create-topic-summary": "$1 {{GENDER:$2|created}} topic summary on $3",
• "flow-rev-message-hid-post": "$1 {{GENDER:$2|hid}} a [$4 comment] on \"$6\" (<em>$5</em>)",

And so on, there are many other examples.

In fact, I'm not sure that posts should have quotations. Maybe something like an <em> element would be better (but if you do this, please do it in the code and don't add HTML to the messages).