1. Lowest Bidders.
#2. Amateurs.
#3. Don't know English properly.
#4. Lazy.
#5. Procrastinators.
#6. Anyone who uses Black Hat or "Grey Hat" SEO.
There is no list of the worst companies... because there are thousands of people in the business now which I would classify as scum. Not much point of making a list when there are so many. Its like the Wild West out there... you're either White Hat or Black Hat.
Me? White Hat all the way.
I cannot point out specific names but avoid hiring SEO from cheap forums. I totally agree with Charles and here is an interesting pictorial on how to identify a worst SEO company http://news.submitinme.com/newsdetails-2...
For finest SEARCH ENGINE OPTIMIZATION results We suggest employing Google Search Bot: http://is.gd/gsbsoftware Applying that computer software We've placed our website to first page of Google on a extremely high competitive keyword.
Google probably does. Use it & find out.
I'm interested in knowing which SEO firms to avoid, does anyone have any experience or knowledge in this area?