"One area of failing
common to SEO companies is trying to offer specialist services they do not have a real competence in," Turner says. "A common experience with this is link development work." He argues that there are a
number of branded search firms that are selling link development as part of their overall package--and then "engage in link development work that is sloppy, clumsy, inadequate--or outright dangerous."
Turner counts social media as another area where search firms can show a lack of expertise. "Having a Digg account and submitting something once to Digg does not a social media marketer make you, or your company."