Unacceptable Content

So I got a rejection letter from Google Adsense. Not worried so much about the rejection but more irritated by the response . Searching the web I found that this is par for course and there a lot of people get a letter like this.
For a company that prides itself in making information easily available it is strange at the total lack of information for the rejection. Seems to me the purpose of the letter is to be necessarily vague so that they don't get sued.
How on earth dose anyone know what policy they  have violated? And as the blog  be at least 6 months old in many Asian countries but there is no 'official' list.
And of course writing this blog post may be deemed 'Unacceptable Content' so I may never get onto Adsense :)