I started learning WF 3.0 back a few years ago and never quite got the hang of it. Has anyone learned WF 4.0 (now that it has been rewritten)?
Is it a viable platform worth considering?
What alternatives exist?
At my last job we had a huge plan to use WF4. We were planning to build a single end-to-end platform to replace the 5+ disparate pieces that existed.
I will limit my comments to two areas:
I admit that the State Machine concept is very appealing to me, but I'm also a proponent of building things from the ground up rather than using (and becoming dependent upon) existing frameworks.