Here is a comment on Coworking written from a VC perspective.
There is the shared space model. Our portfolio company Outside.in has employees from our portfolio companiesDisqus and Zemanta working out of their office. We see that kind of setup all over the startup world. I encourage all of our young companies to think about that kind of setup.
The main benefits of this kind of setup are comraderie (small startups can be lonely), knowledge sharing, high energy, culture, and cost sharing. I have heard so many stories of software developers walking to the other side of the office to talk to software developers working for another company to talk about a thorny tech issue. That same thing can happen in finance, legal, bus dev, marketing, product management, really all parts of the business. You can get some of the benefits of scale without being at scale.
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