If you throw up one crap page and run away, they will get deleted. To do it right read this:
http://www.blackhatworld.com/blackh...web2-0-structures-yourself-simple-method.html
Most probably are lazy though and don't have the work ethic Scritty has...
Scritty's method would benefit from 10-15 sentence replacement spun articles, rather than all of the manual work.
What I do is simple with wordpress and I have not had a single account deleted (I have something like 2500 accounts there since my template was done a few weeks ago)
Day #1: Automatically create 2000 accounts with proxies that have speeds >40kbs
Day #2: Use cleanup template to go in, strip out the sample pages, sample comments and change the blog's title and taglines
(of course you'd be doing other backlinks during this time)
Then whenever you like, start posting!
Post 3-4 posts and leave it... come back in 1-2 weeks (whenever you're running another article through new sites) and post A SINGLE article to each from the previous session
DONE. Don't post on them again, they should survive forever. If you feel like it you can drop a post there monthly... wordpress def won't be removing them then.
The secret is extremely well put together articles so that the grammar is all 100% readable and every article appears different.
I will let you know if any actually do wind up being deleted, but I doubt they will. I have ones from back in april made similarly (but by hand) and they are still there.
Doomby is one of my absolute favs though (something about it is just nice for a website), and my tumblr template is incredible as well... nothing like 200 subdomains and 1500 articles on tumblr giving you the actual post link itself.
Something extremely beautiful about the whole thing, as tumblr is something no automated tool does well (besides mine)