duplicate content

I am not sure if that is the correct title for this or not - we are running about 20 blogs using RSS feeds with about 4 different themes - the problem is that obviously we are not the only people using these feeds is this a problem with google with duplicate content rules - any ideas would be greatly appreciated - thanks

get a copy of Blogs Organizer and use its header/footer plus morphing tools to make your posts unique.

AFAIK Douplicate Content is indeet DOUPLICATE as in "copied without modification" - do what Luke advices and alter the post to some extend and try to achive "similar content" :D