When would this be useful? If your site has a blog with public commenting turned on, links within those comments could pass your reputation to pages that you may not be comfortable vouching for. Blog comment areas on pages are highly susceptible to comment spam. Nofollowing these user-added links ensures that you're not giving your page's hard-earned reputation to a spammy site. 

The idea of “link bait” refers to creating content that is so extremely useful or entertaining it compels people to link to it. Put yourself in the shoes of your target demographic and figure out what they would enjoy or what would help them the most. Is there a tool you can make to automate some tedious process? Can you find enough data to make an interesting infographic? Is there a checklist or cheat sheet that would prove handy to your audience? The possibilities are nearly endless – survey your visitors and see what is missing or lacking in your industry and fill in the gaps.
Getting more website visitors does not happen overnight. It takes some effort but we’ve eliminated the hard part for you: knowing what to do in the first place. By using Google My Business and the other safe channels listed above, you can get the right visitors coming to your site and more importantly, more of those visitors converting into customers.

There are a few competitive tools we tend to gravitate towards in our industry. SEMrush is a fantastic tool allowing anyone to look up a website and get an estimated search visibility and traffic share. Drilling in shows how well pages perform independently. Gleaning through exports can quickly reveal what topics are driving traffic, to which you might replicate or improve your own version.

Keywords. Keyword research is the first step to a successful SEO strategy. Those successful with SEO understand what people are searching for when discovering their business in a search engine. These are the keywords they use to drive targeted traffic to their products. Start brainstorming potential keywords, and see how the competition looks by using Google AdWords Keyword Tool. If you notice that some keywords are too competitive in your niche, go with long-tail keywords (between two and five words) which will be easier for you to rank. The longer the keyword, the less competition you will have for that phrase in the engines.
Having an industry influencer publish a blog post on your site or turning an interview with them into a blog post can help to drive traffic both through organic search but also via that influencer promoting the content to their audience (see the backlinks section above). This can also help to add more variety to your content and show your visitors that you are active in your field.
Backlinks. If content is king, then backlinks are queen. Remember, it's not about which site has the most links, but who has the most quality links pointing back to their website. Build backlinks by submitting monthly or bi-monthly press releases on any exciting company, and contacting popular blogs in your niche to see how you can work together to get a backlink from their website. Create the best possible product site you can, so people talking about the products you sell will link back. Try creating graphics or newsworthy content that will influence bloggers and news websites to link that content.
Thanks so much for this entry, Laura! I loved the way your post is so practical, straightforward, newbie-friendly - and most importantly, how it emphasizes the bottom line at all times. It's easy to get "lost in the fog" of SEO with so many looming tasks and forget the main purpose, so it's wonderful to have a straightforward outline of what to do and why certain tasks need to be done. I look forward to reading your future insights!
You can confer some of your site's reputation to another site when your site links to it. Sometimes users can take advantage of this by adding links to their own site in your comment sections or message boards. Or sometimes you might mention a site in a negative way and don't want to confer any of your reputation upon it. For example, imagine that you're writing a blog post on the topic of comment spamming and you want to call out a site that recently comment spammed your blog. You want to warn others of the site, so you include the link to it in your content; however, you certainly don't want to give the site some of your reputation from your link. This would be a good time to use nofollow.
This post and the Skycraper technique changed my mind about how I approach SEO, I’m not a marketing expert and I haven’t ranked sites that monetize really well, I’m just a guy trying to get some projects moving on and I’m not even in the marketing business so I just wanted to say that the way you write makes the information accesible, even if you’re not a native english speaker as myself.
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