As a consequence, when I was asked to participate in the ACS Webinar, I was initially not phased by the opportunity. That is, until I learned that the audience would include nearly 400 participants. Fortunately, the ACS staff was similarly awesome. They provided all the necessary infrastructure and great user support. All I had to do was put my slides together just like I do for any other seminar. The inclusion of my industrial collaborator, Stephen Quirk, framed my otherwise academic discussion into one that was more accessible for a broader (viz. industrial) audience. Plus he did all the hard work of selecting the questions for me to answer during the Q and A. All-in-all my total time investment was probably less than four hours. Moreover, we reached a large audience and one that I probably would not have "seen" otherwise. That's a high benefit to cost ratio which I consider a big win.
If you missed my Webinar on "Digitally Pulling Proteins: Molecular Dynamics Simulations," you might still be able to hear it at http://acswebinars.org/digital-proteins. At present, it's available only for view by ACS members.