Social networking may work fine with some, dependign on the main website topic.
Ezine Aritcles are good too, but should only be written, if the author can deliver some good and interesting content.
Speaking of Content: This is probably the most important aspect of a website beeing successful or not.

You need good quality content!
The search engines love it and most important your visitors will love it. And thats what it's all about..

Your website visitors meaning traffic to your site.
A visitor who likes the content on your site is more likely to come back again and recommend the site to others.

Resulting in more traffic..
So my advise is: Spend more time building good websites rather producing many low quality sites.

What do you think? Agree or not?
Let me know your thoughts.
You can find me here or at my new site:

Traffic-Tactics-Forum.com

Hope to see you around
Nick Stone