will help if you tell us about what site you talk , that 2 from your signature have no content and are for sale ..
Its probably because you already have ads that resemble that of adsense. Remove those and try again. You will be approved. Then again, I am not sure if you will be able to remove them as you are hosting your site free.
Is it me or is there no content at all on this site? You should have at least 10 pages of good content before applying for adsense.
i just thought that they allow everyone to have adsense and i wasn't really sure why they didn't let me. i don't really know much about it.