Try
http://www.articlepostrobot.com . You can post article to about 289 sites by clicking ONE button ONCE. The site list is at
http://www.articlepostrobot.com/sitelists.htm which covers most high page rank article sites.
Also, use Article Post Robot, you can make each article site have an unique version of your article. So, you do not have to worry about 'duplication penalty'.
you can request a 7-day demo by sending an email to help(at)articlepostrobot.com
Average