Read about it here. Invisible Adjunct was one of the first academic blogs I read, and her take on adjunct (and other) issues was always refreshing. It's sad to see her go; I wish her luck.
[update 3/24/04, 4pm P.S.T.: There are now more than 127 comments and 21 trackbacks on Invisible Adjunct's final post, and it's only been about 24 hours since the post was made. Wow.]