What are the advantages / disadvantages of a Cloud-based / Web-based IDE?
I'm writing this as DevConnections in Las Vegas is happening.  Visual Studio 2010 has been released and I now have this 3GB beast installed to my machine.  (I'll admit, it has some nice features.)

However, while the install was monopolizing my computer's resources I began to wish that my IDE worked more like Google Documents (instantly available, available anywhere, easy to share, easy to collaborate, naturally versioned).  

A few Google (and StackOverflow) searches led me to :

* [Coderun][1]
* [Bespin][2]

I'm well aware that these IDE's are missing a lot of what exists in VS 2010.  However, that isn't my question.  Instead, I'm wondering what benefits a web-based IDE might have?  Assuming a company invests the time to create the missing features, what is the downside? 

  [1]: http://coderun.com/
  [2]: https://bespin.mozillalabs.com/
What are the advantages / disadvantages of a Cloud-based / Web-based IDE?
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I'm writing this as DevConnections in Las Vegas is happening.  Visual Studio 2010 has been released and I now have this 3GB beast installed to my machine.  (I'll admit, it has some nice features.)

However, while the install was monopolizing my computer's resources I began to wish that my IDE worked more like Google Documents (instantly available, available anywhere, easy to share, easy to collaborate, naturally versioned).  

A few Google (and StackOverflow) searches led me to :

* [Coderun][1]
* [Bespin][2]

I'm well aware that these IDE's are missing a lot of what exists in VS 2010.  However, that isn't my question.  Instead, I'm wondering what benefits a web-based IDE might have?  Assuming a company invests the time to create the missing features, what is the downside? 

  [1]: http://coderun.com/
  [2]: https://bespin.mozillalabs.com/