The Lync Server PowerShell blog introduces a new series today. (Although, given that the blog is only two weeks old, they're pretty much all new at this point, aren't they?) Today we introduce the 21 Things series. You've heard of top 10 lists? Or maybe the top 1,001 places to go before you die? Well, we've decided to split the difference (or somewhere close) and go with a list of 21 things you need to know, or that we want to tell you, about Microsoft Lync Server PowerShell.