I'm running the new Mac edition of Domain Ronin and I have to tell you it's extremely stable. I'm getting about 250k pages every 5 minutes which equates to about 2700 checked domains. At the moment it's only using about 1 gig of memory for 100 threads. I've got the page count and other settings to the max. The builtin features like TF and spam checking on the fly are wicked helpful.
Searching for a suitable domain name for your website can be quite trying. The reason for this is that the names that you want to get have already been assigned and are not available. As an SEO you know the importance of getting a domain name that describes your business as closely as possible. For example, if you are running a car rental service, you will look for a domain name that has the words ‘car’ and ‘rental’ in it. So if you can’t find a suitable name, you could use the expired domains tool which might show you domain names that would meet your requirements.
What I like to do is sort by DP which stands for domain pop, and this is basically the number of linking root domains. So, BL is the number of back links. As you know that can be somewhat misleading if they have a lot of site wide links or multiple links from the same domain. I like to sort by domain pop. What that does is it brings up the sites with the most amount of referring domains.
Expired domains with page rank, Alexa, TF, CF, Backlinks, DA, PA, RD, etc. are of much importance. It is because search engine values those expired domains because of their pre-built matrices. It can take you months to build that trust and then it will be of the value that you want. So, what if you can find expired domains with authority links like expired domains with CNN links, expired domains with Wikipedia links, expired domains with Huffington post links, etc. This kind of expired domains will provide you some great juice for your money website.
What DomCop does for you, is show you a list of all these domains along with important metrics for every domain. These metrics, along with our powerful filtering and sorting capabilities, will help reduce the size of the daily list from 200,000+ to just a handful of the very best domains. What would take you hours, will now literally take you seconds to do.
Here's a test I have in process.  I bought an old $5 closeout domain from Godaddy TDname expired auction.  I put a quick minisite up and linked to it with a crazy anchor text phrase.  The domain is ranking for that crazy term now.  It's gone through one pagerank update and I'm waiting for a second to come.  Then I'll redirect the domain to another minisite.  I suspect the second site won't rank for the anhor text, but we'll see.  
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.
The following TLDs are now fully supported with a deleted list and a droplist (pending delete list). .hn, .ht, .rw, .cr, .gl, .gy, .gs, .om, .qa, .ir, .pe, .com.pe, .tc, .ky, .th, .co.th, .ke, .co.ke, .uz, .kz, .pm, .re, .tf, .wf, .yt, .sx, .gd, .gi, .kg, .mu, .im, .ug, .sb, .tl, .st, .sm, .so, .sn, .pf, .nyc, .cloud, link, .ms, .mk, .af, .bi, .pr, .com.pr, .nf, .nc, .dm, .bo, .ki, .iq, .bj, .am, .as, .ax, .fo, .mg