I think most are missing the politics.
This is surprising, coming as it does on the heels of Microsoft's refusal to comply with the U.S. Federal court order to hand over overseas held emails.
So I will spell out some of the political consequences here.
The service closure forces a service switch on the remaining people who were using non-Microsoft MSN clients and thus avoiding the Guangming, which operates the Chinese version of Skype, which has been modified "to support Internet regulations", which is to say The Great Firewall of China. If these users want comparable services, the only comparable one now available to them is Tencent’s QQ messaging software, which from the start has been designed "to support Internet regulations". So there are no longer any "too big to shoot in the head" options which do NOT "support Internet regulations".
So really the only people who care about this will be Chinese dissidents who want to communicate with each other using an encrypted channel through a server inaccessible to the Chinese government, and any journalists seeking an encrypted channel whereby they can move information out of China without having to have a government approved satellite uplink handy, or a willingness to smuggle out data storage some other way.