Yes. I think you should use these articles and submit them to online magazines. I really like Ezine, as it seems to have a good standing with Google.
The one thing to be be careful of however is not to self promote within the article, even if that is your hope. Make the article useful and interesting and Ezine will allow you 2 self promoting links in the author box.
I have about a 6% URL click rate with ezine and have made some sales because of these articles.