I am often asked to recommend tools and services, here are my top picks:
Infographics: Avalaunch Media (Mat Siltala)
Pay Per Click: KeyRelevance (Christine Churchill)
SEO Audits: HighRankings (Jill Whalen)
Link Building PushFire (Sean Dolan/Rae Hoffman )
Link Building: CanadianSEO (Melanie Nathan)
Link Building: LinkFishMedia (Julie Joyce)
Web Design: HitReach (Chris Gilchrist)
Copywriting: Angie’s Copywriting (Angie Nikoleychuk)
Video Production: I don’t have anyone to recommend at the moment but find this site an awesome resource for all things video ReelSEO Video Production
My list of service providers can implement any tactic we discuss, they are known for their savvy and attention to detail, they’re the best of the best in the industry. And they are pretty great people too! 
Recommended Tools
SEOBook Tools Offers multiple SEO tools and an awesome reading resource. My favorite tool is the HubFinder.
Buffer App – Allows you to schedule and share what you find on Twitter, Facebook and LinkedIn. If you see me tweeting, chances are its coming from my Buffer App.
Instapaper - Allows you to save pages for reading later
Ontolo – Utility link building toolset
Link Prospector – Utility link tool
WhiteSpark Local Citation Finder – Utility tool for local links
SpyOnWeb – Enter an URL, Google adsense or analytics code and find out what resources belong to the same owner.
InfiniGraph - Tracks what’s trending in your social media circles
