Ok! I'll have a go at a simple how-to in the hope of inspiring a few other, more competent, members 
-timns
Euhm, you could start a new thread for each HowTo* describing the intended HowTo*, and add/update with any contributions, as in posts from other users, to your original message to build a complete as possible first thead-message, holding the entire HowTo*, eventually.
It would ofcourse be nice to name any contributes, but much less distracting if the additional posts would initially be hidden, until a 'Reveal all comments' button was pressed, just like a spoiler button in a single message.
*) HowTo's and Mini-reviews should be handled equally, IMHO, just use the correct title-prefix