Could I suggest that before submitting any sites for review people should also check each page of their site on http://www.copyscape.com/index.php - I realise it may be a little time consuming with large sites, but it will quickly pick up whether the 'inspiration' you get from other sites has crossed the line in to 'plagiarism'.
It would be more sensible to take the time to find out for yourself than risk an irate webmaster asking Google and Yahoo to delist you for copyright violation.