All of these domains are available right NOW!!! Grab before someone else does. ;)
around 15 days ago i scrape 20 expired tumblr account with good PA and i check already indexed or not spam anchor text, link profile, archive.org (wayback machine) and when i found clean subdomain then I register with unique email id.
after that i add some article with my MS link...
Anyone of us who used expired tumblr accounts, faced a drop in PA after a while. This is natural, as most of the backlinks to tumblr profile come from reblogs and likes (links created on posts by reblogging and liking posts), and these get deleted after the profile has expired.
So, a simple way...