Keep promoting popular article or post next article?

Last week I created a blog and posted an article. I promoted this article in a couple of forums and posted it to reddit. That was 4 days ago, there has since been over 3700 unique visitors. Traffic has remained steady for the past few days, but I'm not sure how to proceed. I have gained 33 email subscribers in the process as well.
Would it be advised to continue to try and promote the article via forums and other methods or should I post my next article?
I was thinking the best strategy…
Keep promoting popular article or post next article?

See original post by Googs