Posterous supports demonstrations in Tunisia and Egypt /w email
blog.posterous.com
blog.posterous.com
"Social Media Blocked In Your Country? Email Keeps The News Flowing"
This sounds like an infomercial about how to start a revolution in three easy steps.
I'm sure they're well-intended, but I wouldn't call this "taking a stand". Google took a stand against China. Here, Posterous is saying "we've heard you can't use Twitter and Facebook anymore, but you can use us instead!" but they're not really changing anything to their service for that situation.
In a way, it feels like YouTube saying to the Chilean miners "Blocked in a mine shaft for months? YouTube Leanback will keep you entertained indefinitely!"