i got one excellent suggestion. now with the help of ajax. by typing in the "Subject" field in the new post. you can display an autocomplete box which searches iphone dummies post for relevant terms. if the subject has a 80% match in the search , then the poster will be denied from posting and instead redirected to the relevant post.

of course this will require modification in the forum system itself. but its very plausible and the technology is there.

i done several ajax applications before, and this is not hard to achieve.