I wanted to rank for a keyword "low fat xxxxxxxx" and so I write and spin the article.
Load it up in SEOLinkVine, Traffic Kahuna, etc. and I know that I will rank it nice and good.
After 3 weeks, not even top 10.
Just now, I look at the article again and to my surprise I wrote "low far xxxxxxx" as the backlink!
So all the efforts in backlinking for the past 3-4 weeks are gone!
Lesson learnt: Double-Triple check your backlink anchor text!