That's not really true about the articles getting buried. If you have a really good topic, they'll bring you back, on a long term, plenty of TARGETED visitors. Take a look at this article:
http://searchwarp.com/swa7630.htm I wrote for a German LED manufacturer.
It still brings them interested clients, although it was posted in May 04, 2005
In January the company even got an invitation to a conference in the UK to present this issue.
Second: articles bring you one way links: very valuable for SEO.
Third: read SEO Made Easy by Brad Callen to learn some tips that will help your website get a higher ranking and improve SERP.
If you don't have money to pay for promoting, there's nothing better than articles and blogs.
So, if articles don't do it for you, create a blog and "burn" it:
http://www.feedburner.com/fb/a/homeHope that helped.