When you search "什么是..." ("What is ...?") on google.cn

SERP shows links to Tianya.cn (Ask&Post service.)

http://www.google.cn/search?q=%E4%BB%80%E4%B9%88%E6%98%AF%E6%B1%BD%E8%BD%A6&hl=zh-CN&newwindow=1&sa=2

(search "What's car" in Chinese)

links:
相关服务： 到天涯问答提问什么是汽车 到天涯来吧讨论什么是汽车
(Related service: ask "what's car" on tianya wenda, discuss "what's car" on tianya laiba)