how long must a blog go without activity before it is considered abandoned?

• when a blogger has not updated for months, even years, with no explanation?

blogger FLic has issued a call for dead blogs.  her comment section is accumulating quite a list of notable 'dead blogs'     graveyard of dead blogs  6/8/07

is this an abandoned blog?

badfurdays.blogspot.com/ bleach the infamous strawberry

last post 12/27/05

blogofcarrie.blogspot.com/blogfart

1/17/07  blog of carrie has been updated.

BLOGthenticity

Kaput since October 2005. Had a few brief flickers of inspired genius but now just sits there as an homage of something that could've been fabulous.

CorporateBlogging.Info

Rather a sad day when Fredrik left this one to mothball. It's still an invaluable resource for those interested in starting a business blog. [farewell to blogging letter]

Decent Marketing

http://decentmarketing.typepad.com

Katherine Stone, why don't you answer my emails? (She was once head of Coca Cola Experiential Marketing or something lilac that.) I Googled your name and came up with old posts. You've vanished, without a "farewell to blogging" post. Last post: Feb. 2006. Orphaned.

Liz Ditz       states the following:

*  Getupgrrl  wrote Chez Miscarriage (after her child was born, she

stopped blogging and I believe the blog archives went away.) 

goodbye letter not archived; this is: "Chez Miscarriage hangs up her blog"

    * Women, Fire, and Dangerous Things (his employers were unhappy

with his blogging)

    * Multidimensional Me --Koan Bremner shut down her public blog and

de-mounted the archives.  That chapter's over.

News Cat blog (aka Bitch Kittie) looks abandoned even though it says, in a post of September 26, 2006, that it's not: "Abandoned blogs make baby Jesus cry".

"Abandoned blog"

Jasmyin says: "Yes, I abandoned it for a while. Didn’t really have the time to bother about my blog, which is not that good."

Sterling Camden says:

One of the most widely observed blog abandonments occurred when dead20  shut down, apparently due to a traffic storm that followed the outing of the identity of its author, "skeptic".  The page now says only "we'll be back".

orcology began a promisingly insightful blog in May 2006, but hasn't posted again since June 2006.  No reason given.