It seems we are blocked by the GFW,Anyway,we can visit it with VPN,But most of the VPNS are not Free.

NOW,Good news is,There is a new altcoin called VPNCoin launched,we can use the Free VPN function which Integrated in the VPNCoin's wallet. Further more ,this coin is a Free distributed coin for all of us! so we can use it for a long period even if the VPN is not free!

We can visit BTT again.feel good!

A quick google search about GFW shows that this is something that the Chinese government uses (as a firewall) to block unwanted internet traffic.
I would think that using a VPN via an altcoin would potentially make it look like you are involved in much worse things then freedom of speech or bitcoin. I think the few dollars per month that PIA charges (link at the bottom of every page on the forum) is a very good investment.
What is the BTT forum? what is its significance to the bitcoin community?
BTT = BitcoinTalk.org