Are you using TPL Dataflow? We’d love to know!

Are you using the new System.Threading.Tasks.Dataflow.dll library, either from its CTPs or from the .NET 4.5 Developer Preview or Beta?  We’d love to hear about it, and if you have time, what your experiences have been (good or bad).  What kind of solution are you building, and how are you using TPL Dataflow in it?  Has the library helped from a code maintenance perspective?  From a performance perspective?  Are there features you’d like to see added in the future?

Please email me at stoub at microsoft dot com.  We’re looking forward to hearing from you.  Thanks in advance!