Forget it LW. I have written hundreds of articles over the years & if you post them on the internet, consider it open source. Its too hard to police.
Now, the thing you CAN do is get credit for an article you wrote first. Either by submitting to a journal or newspaper (if applicable) or something like Associated Content. If you are planning on writing a lot, especially to establish yourself as an expert, I would suggest you get an account. Its free & will generate lots of links to your site:
[url]http://www.associatedcontent.com/[/url]
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh