I'm sure I am not the only one thinking this but with Microsoft picking up Skype, it is going to be a huge win for Lync 2010. Skype is notorious in the enterprise UC space for NOT integrating or playing nice with anyone, and every enterprise CXO uses Skype when they travel.
Now if Microsoft does this right Lync will be federated with Skype sometime soon, which is always the #1 question I'm asked when I show customers Lync and is the only "public IM" federation they care about.
UPDATE 12:15 10 May 2011: In this morning's joint Ballmer & Bates press conference they have confirmed that they are targeting Lync + Skype integration to bring Skype access to the enterprise. Awesome!