19-Jan-2010 No able to get Adsense approve ?

This is the 3 or 4 try that Google Adsense Team did not approve my application. The reason is

Unacceptable site content:

In order to participate in Google AdSense, publishers' websites and
application information must satisfy the following guidelines:

*You must provide accurate personal information with your application that
matches the information on your site.
*Your website must contain substantial, original content.
*Your site must comply with Google AdSense program policies:
https://www.google.com/adsense/support/bin/answer.py?answer=48182 which
include Google's webmaster quality guidelines:
http://www.google.com/support/webmasters/bin/answer.py?answer=35769#quality.

If your site satisfies the above criteria in the future, please resubmit
your application and we'll review it as soon as possible.

This keep me thinking what should a Good Content ?