Ezinearticles.com has now started cracking down on commercial links in articles. I got my first rejection after about 40 articles.
they are getting more tight with restrictions..I had an article declined couple days ago because it was posted elsewhere under a different author name (still me). I explained that so we'll see what happens.
I also noticed the same thing They declined one of my article that was published on another Ezine website with a different Author
So far, I've found ezines good. So far they've allowed my two links at the bottom of the article. I think this is understandable - they don't really want to be publishing duplicate articles.