Nice list although I am really against no 9 certifications are for losers!
#9: Not taking advantage of free training and certification opportunities. Each time I have updated my resume in preparation for seeking a new job, I’ve regretted not having formal certifications to accompany my experience. This has been particularly irritating when the company I am trying to leave has a policy of paying for any classes the employees want to take, whether they’re relevant to the business or not. It’s kept me from applying to several jobs I was otherwise qualified for simply because they required possession of particular certifications.
Lessons learned? Take advantage of all free training opportunities, even if they have to be pursued out of business hours.
via Confessions of an IT pro: My nine biggest professional blunders.