Welcome to the Q&A Forum

Currently working with a client that has seen his rankings diminish after the penguin update. I've manually analyzed all his 600 backlinks and identified approximately 85 external links from websites that have been banned by Google. How do these sites affect his current rankings? Should i just disavow all these links using the Google disavow tool? Any comments would be highly appreciated!

I'm considering asking some of our clients to leave a Google review on places page. Currently we've focused more on LinkedIn recommendations but this has not impact on local search results. So my questions is what do our clients require to leave a Google review? Do they need a Google + profile? Do they need a Google + business page? Or would a personal gmail account suffice? Appreciate any feedback you have!

I recently read the blog post by Steve Webb about performing a SEO Audit (http://www.seomoz.org/blog/how-to-perform-the-worlds-greatest-seo-audit). In the article he mentions that it's important to have outlinks to high-quality websites. So my questions is if this is an essential element of onsite SEO?