Maybe your titles aren't catchy? Your articles are too old? Some of them die quickly.... Are you targeting any keywords to get indexed in search engines? Is your niche too competitive? There might be thousands of other articles like yours.
Yea Titles are the most important part of Ezin You already got 30 articles approved taht is good that means your site's rank will be higher on the next google pr update that way I am sure you will get some SE traffics soon
i try to space them out a bit too. If you submit 30 articles at once, they all get indexed by google close to each other. Then slowly they lose ranking. If you space these over time, then you get an article always new and ranking high. Also make your titles catchy, how to, 10 tips, etc. are always good. Also you need keyphrases that are searched for lots, but don't have too much compettion. I use http://tools.seobook.com/keyword-tools/seobook/index.php for keyword research, i want at least a minimum of 30 searches a day in google. I then type the keyword in "keyword" into google, and want less then 10000 competing pages, just to give you some sort of idea.
thanks jailburn, I find that using keyword tools will produce different keywords and or phrase but most of them are similar in topic - Do you guys still write articles for that keyword and or phrase even though it is similar to your main keyword. example: cheap nfl jersey and cheap authentic nfl jerseys are similar would you write seperate articles for them and still submit to ezine.