Salesforce acquired the social productivity company http://www.do.com/ back in February 2011, when it was called Manymoon.
At the time, Manymoon served over 50,000 companies.
Do.com today sent out an email announcing the service will be discontinued on January 31, 2014 and that it is no longer accepting new user registrations.
The company is working on an export tool, expected to be available on November 15, to let users save all their projects before the axe drops."
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