Attempting to replace a dead link with your own is easily and routinely identified as spam by the Wikipedia community, which expects dead links to be replaced to equivalent links at Persistent attempts will quickly get your account blocked, and your webiste can be blacklisted (the Wikipedia blacklist is public, and there is evidence that Google uses it to determine rankings), which will have negative SEO consequences.
People love to learn, and webinars are an excellent way to impart your wisdom to your eagerly waiting audience. Combined with an effective social promotion campaign, webinars are a great way to increase traffic to your website. Send out an email a week or so ahead of time, as well as a “last chance to register” reminder the day before the webinar. Make sure to archive the presentation for later viewing, and promote your webinars widely through social media. If you're wondering how to do a webinar, click the link for some tips.
Hi Brian! I enjoy reading your posts and use as much info as I possibly can. I build and sell storage sheds and cabins. The problem I have is that there are no top bloggers in my market or wikipedia articles with deadlinks that have to do with my market. 95% of my traffic and sales are generated via Facebook paid advertising. Would love to get more organic traffic and would be interested in your thoughts concerning this.

Fortunately, Google puts more weight on the anchor text of external links anyway. So as long as some of your external links have your target anchors, you’re probably OK with a “Home” button. In fact, I’ve ranked homepages with a “Home” anchor text nav button for some seriously competitive terms. So it’s not a make-or-break ranking signal by any means.
Expert roundups have been abused in the Internet Marketing industry, but they are effective for several reasons. First, you don’t have to create any content. The “experts” create all the content. Second, it is ego bait. Meaning, anyone who participated in the roundup will likely share it with their audience. Last, it is a great way to build relationships with influencers.
If you are using Responsive Web Design, use meta name="viewport" tag to tell the browser how to adjust the content. If you use Dynamic Serving, use the Vary HTTP header to signal your changes depending on the user-agent. If you are using separate URLs, signal the relationship between two URLs by tag with rel="canonical" and rel="alternate" elements.