If you have 100 new articles, what will you do? Which is the best between post articles for your own website or post the articles to article directory
Duplicate content is a myth and the internet is so big you won't get caught. However, if you post the same thing to the same site over and over, then you'll get penalized.
If they are unique, you can post half of them to your website and use half to post to article dirs to get some backlinks. If they are not unique, use WordPress Uniquefier Plugin (if you are using wordpress) and post them all to your website. You can find more info about here: http://forums.digitalpoint.com/showthread.php?t=1000918
Personally i would submit one a day to your blog for 100 days (that would keep you going for a while) so then you would not have to write any articles for your blog, for 100 days. Whilst your doing that re-write articles or just from the top of your head write 250-300 word articles for article directories and submit them there.
I'd put them on your site, start with 20 or so, then put one a day as some others have stated. Be sure to SEO optimize them. As you do this start to rewrite some (you can use DupeCop to check the duplicate content) and post them to some article sites..
I'd post them to my blog over time. Then submit a rewritten, "teaser" version to the article directories.