According to the WSJ article, protesters are moving from various social network sites, such as Twitter and LinkedIn, to organize protests as the Chinese government blocks these sites. We checked out access to LinkedIn on both WebsitePulse and JustPing and both sites indicate that LinkedIn is being blocked from cities in China. It also appears that Twitter is blocked as well.
Interestingly, former LinkedIn employee Surya Yalamanchili points out that one reason behind why China could be blocking LinkedIn is because many of its status updates have been published from Twitter.
We’ve contacted LinkedIn for comment on the matter.
UPDATE: Here’s the response we received from LinkedIn: We are aware of the reports of a disruption to our service for our members in China. We are looking into the situation now.