Anyone can easily start a Yammer network for free and invite co-workers to join.
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Bringing Yammer into the Microsoft family will bring social networking into the enterprise application experience.
Yammer is used by firms including the motor giant Ford and the business services firm Deloitte.
Yammer plans to continue to offer its service in the way it does currently.
Like other startups, including Xobni, Yammer and YouSendIt, Box.net is targeting the very-hard-to-get IT budgets at companies.
In only two years Yammer has lined up 1.5 million members, entirely by word of mouth.
Interestingly, any employee can create and manage an enterprise social network like Yammer.
You also yammer about how much we get from cosmic rays, which is true.
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Yammer looks to me like a medium-sized business application that is also a Sharepoint app.
The Facebook effect might surface in your company through Chatter or Yammer.
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He is the CEO and founder of Yammer, which is essentially the Facebook for the enterprise.
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Interestingly, Yammer was actually a spinout of Geni and went on to be a larger company.
That values Yammer, an enterprise social network, roughly 3x on a per user basis compared with Facebook.
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"Groups are the key, " says David Sacks, chief executive of San Francisco-based Yammer, which has four million users.
Over the past couple years, Yammer has been used by over 100, 000 companies, with 80% of the Fortune 500.
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When a company sees hundreds or thousands of its employees using Yammer, their IT departments often get in touch.
Upstarts Yammer and Jive Software are selling similar social networking tools for businesses.
Four of the firms on last year's list were acquired, including Yammer Inc.
The incumbent in this space, Yammer, not surprisingly came out swinging in response.
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Rabois is also an active angel investor, having placed bets on YouTube, Yammer, Airbnb, LinkedIn, Quora, Palantir and Eventbrite.
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Yammer points to about 100, 000 customers and indicates that about 80% of the Fortune 500 have used or tried it.
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When you post an entry in Yammer, you can designate tags or keywords to your post, and so can others.
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Yammer was created as a tool for the staff to use internally to communicate with each other in Twitter-like messages.
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Many Fortune 500 companies use tools such as Yammer, an enterprise collaborative social network that stores data in the cloud.
While at the Office division, Ms Hood worked on the acquisitions of online chat service Skype and business networking company Yammer.
The enterprise collaboration space is busy with companies including Jive, Yammer and Moxie Software, as well as IBM and Microsoft.
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If I were you, I would focus my brand and competitive strategy against more agile and social challengers such as Yammer.
Peter Moore comes on to yammer on about the zen of running.
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As an investor in other ventures that use the Business Freemium business model such as Box, Yammer, and YouSendIt, Holleran sees its advantages.
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Startups including Yammer Inc. and One Kings Lane Inc. have moved into the notoriously gritty stretch to take advantage of special tax breaks.
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