I think quite a few people in this thread need to take a few deep breaths.
What especially concerns me are a number of people actually "holding off" or looking at inferior alternatives (such as Scalix) due to the MS announcement and the FUD that is being spread in this thread.
These people need to see a few facts before they make a rash and potentually wrong decision for the email needs of the companies they represent.
Even in worse case, if MS/Yahoo deal goes through then it would still be at least 2 years before development would cease (thats even if it would cease), allowing for 1 year for the battle to takeover, 6 months for regulatory approval, 6 months for MS to get plans into action.
Now, given that Zimbra is already years ahead of its competion
, you are looking to at least 4 years of useability. And by that stage you would do a review anyway.
So all those considering using Zimbra now, the MS announcement should not hinder their plans. You should consider Zimbra to be the best collaboration product for at least the next 4 years.
Also, do the people in this thread really think that the employees of Zimbra would simply walk away from a product their have spend countless hours of dedication on. The fact is, there is nothing to stop the employees or ex employees to continue development of the Open Source version.
So, its not all gloom and doom.
Cheers
bigmucake.