This is a little bit on the grey hat/black hat side of the spectrum. But the fact is building a blog network with expired domains flat out works. The only issue is getting those cream of the crop domains without going broke. This video will walk you through tested strategies and techniques you can use to find powerful, yet affordable, expired domains.

GoDaddy Auctions is a marketplace where GoDaddy lists domains that have expired and are in the renewal grace period. Apart from these GoDaddy also lists other domains, but the expiring auctions at GoDaddy are the most popular. Based on the percieved value of the domain, domainers and SEOs bid on these auctions. If the original owner does not renew the domain, the top bid wins the auction and gets the domain name.
Some people might want to skip that because they think that they've already been crawled, which is a possibility and you can apply a manual exclusion to any results you think are going to be returned on Google for your search query. So things like YouTube, you don't want to crawl, then you can add them in there and it will ignore them if they returned in the search results. Okay, so that's yeah! That's pretty much the search setting query settings here. So your search terms go here. You can have as many as you like just enter them in their line separated.

Trust flow refers to the number of quality backlinks that a website has. If backlinks from websites that have a high domain and authority ranking point to your site; your website’s trust flow will increase. Trust flow is also measured on a scale of 1 to 100. If your website has a large number of backlinks, but they are not from trustworthy and reliable domains, your websites trust flow will be low. On the other hand, if you even have just a handful of backlinks to sites that search engines rank highly; your trust flow will increase.
SEO is not as easy as it used to be. The market is very saturated now, content is now incredibly easy to generate and publish. Everyone and his dog (or gran!) can make a wordpress website. The main ranking factor for Google is still backlinks and will be for the foreseeable future. Your content might be better than your competitors but if they have more links they'll simply always outrank you and receive more traffic. Fair or not, its a fact. This method can see you get the strong backlink profile you need to rank #1. Please note a PBN is considered black hat so please diversify your backlink profile and do your research first.
For example, placing your backorder at NameJet will reveal your interest to other potential buyers so if no other backorders are present you should wait until the last possible moment before the deadline to place your backorder — because if you’re the only backorder, you’ll get it for the minimum $39 bid on expiring names and it won’t go to auction.
When a domain name that was previously registered expires, it goes through a grace period that allows the previous registrant one last chance to reclaim their domain before it becomes available to new buyers. If the previous registrant still has not renewed their domain after the 77 day deletion process, the domain name will officially expire and enter the Aftermarket.
Lately I've noticed a lot of questions in Q&A centering on purchasing expired domains. A lot of our members have expressed interest in buying old domains for a variety of prices (some are cheap, some are going for upwards of $50k) and want some advice on what to do with the domains once they've been purchased. I'm no domainer, nor am I an expert in such a business tactic, but I generally recommend one of three different options for an expired domain (and would love to hear more if you've got any).
Also, I currently have two other domains that are registered with Squarespace, and I have their annual payments set up automatically so I never have to manually pay (and so nobody else gets that window of opportunity to take the domain away from me). Would it be possible that the owner of this domain might just have a similar system in place and that I might be wasting my time?

There is no easy way to explain “all” things about expired domain names. As you stated Michael, Network Solutions domain names go to the partnered domain auction service BUT, not “all” do… NSI customers have the option to opt-out of having expired domains go to auction. If a customer picks this option, the domain name would go through the drop process and go PendingDelete around the 71st day after the expire date. When it is released from the registry, the domain name is fair game to the major dropcatching services and the private ones. This still doesn’t mean anybody would grab it, and the domain may become available to hand register.

If the domain name is not with any auction house partner (I think that’s what you’re saying), then you can use a drop catch service anytime: They do not make your order public information as NameJet and others do by sharing how many bids are placed on a domain name and thereby driving interest.
Of course, this does not happen equally across the board. Some site owners are lazy and barely put in any effort. As you can probably tell, the four situations I outlined above probably will not occur for website owners who are lazy. Now, for website owners who put in the work and the time for their online properties, you can bet that they would get to benefit from the four situations outlined above.
Hundreds of thousands of domains expire everyday. While most of them are trash, quite a few are aged domains having excellent backlinks. These can be easily filtered using metrics from Majestic (Trust Flow) & Moz (Domain Authority). These are great for your money sites or for building private blog networks. Some of these domains have natural organic traffic, that can be determined by their SEMrush rank or the SimilarWeb data. These are great for domain parking or for promoting affiliate offers.