walkman - 11:37 pm on Apr 12, 2011 (gmt 0)
eHow is staying because Knol is dead. Others, too bad. Review site? Google has them, by scraping yelp and others so you go bankrupt.
Shopping site? Google has shopping.
Local listing? Google has them.
Financial site? have you seen google's rate compare? Why is your site needed?
and so on. They will be gunning one by one all these sites.