Is it possible to re-register expired blogspot subdomains?

Anyone have any idea how would be possible to re-register an expired/deleted blogspot subdomain?

Yes save it and wait a few weeks check back it should be released for re register.

You can register it after 6 months if it was deleted by G because of spamming

Yes it can be registered and same applies with other web2.0 like tumblr, weebly etc.,

i read an article on this site about how to find expired web 2.0 domains with good metrics and use them for your PBN, but it was late at night and i forgot to bookmark the page (yes, my bad).
i've tried using the search function, but to no avail.

anybody know hot to search for these "expired" web 2.0 sites (tumblr, weebly, wordpress ect..)
just doing the math and setting up a large PBN can get pricey for a newb...and so using a good expired web 2.0 site for my PBN sounds like a good money saver.

anybody know how to do it and willing to share the knowledge?