I have checked the keywords that the article is under and don't find it on the top pages for any of them. The keywords listed are very generic. The article is only 300 words and pretty generic in content.
I have done a search on the title of the article to see if it is reprinted somewhere. Found it on one 'under construction' blog and it's supposed to be on another blog but I couldn't find the post.
I understand that everyone hopes for a few of these 'home run' articles but is it truly just luck. What's the key?