[For 1.6] Minimum Post

[PwnEm]

Works great.

However, it limits both replies and threads, if you want to just limit it to threads you can remove this part from the main PHP file:

$plugins->add_hook('newreply_do_newreply_start', 'minimumpost_invalidate');
$plugins->add_hook('newreply_start', 'minimumpost_invalidate');

Tried it and it seemed to work without any problems.