dvduval - 8:17 pm on Sep 8, 2010 (gmt 0)
Do you mean write an article on your OWN web site? Or in an article directory linking and then link it to a page on your site that you want to rank well for long tail keywords?
Yes, I can simply blog about something on my own website without getting external links pointing to it, and I rank quickly, but usually low in the top 10 (ex. position 8). I have about 10 million links pointing to my site, so that probably helps a good bit.