Official blogs of various search engines

Google China Official Blog: Google Blackboard

googlechinablog.com

Baidu Official Blog: Baidu's Space

hi.baidu.com/baidu

Yahoo! China Search Official Blog: Search Log

ysearchblog.cn

iAsk Search Official Blog: iAsk Search BLOG

http://blog.sina.com.cn/m/iask_blog

Sogou Web Search Official Blog

http://sogou.blog.sohu.com

Sogou Music Search Blog

http://sogou-mp3.blog.sohu.com/

Sogou Lab Official Blog

http://labs.blog.sohu.com/