Maybe you can post in the link exchange section and offer some guest posts for those who are interested in contributing articles to your site.
I doubt you will get free articles anywhere....articles is another form of money online, nobody will be giving them out. If you are really inclined to writing your own articles you can download a article spinner and get articles that other people published spun for "somewhat" unique content. I wouldn't reccomend stealing other peoples articles because you will get in trouble and because of the duplicate content rule you probably won't get ranked very high for these articles so it's not even worth the risk.
Thanks Paul And how to avoid damage for google rank for dublicating, Maybe if I use blog and add tags it will help ?
Articlebase is also a good article directory to submit your articles. Your articles have higher chances to be syndicated.
If you get free articles they probably will not be unique. Either write your own articles or get plr articles and use them for inspiration for writing.
Here two dofollow free articles are following, http://www.fortunearticles.com/ http://www.fourpxarticles.com/
I think original article would be more useful than free one. Maybe it would take you more time, but it would be really worth.
You can go to exine articles and use any of the ones you find there. All you have to do is give the author credit and keep the bio box the same. And writing your own articles or paying someone to write them for you would give you better results.