This has been a great week for Subscription Insider, wrapping up another sold-out Payment Boot Camp. We enjoyed meeting some of you and sharing the wisdom of our subscription, billing and payment experts! While that was going on, we were also working on this weeks edition of Five on Friday. In this issue, Pagefair shows how Facebook is winning with its ad block strategy, PR Daily shares how marketers can increase webinar attendance, Meredith Corp. signs 700,000 paid subscribers to The Magnolia Journal, Media Blog tells us how to create viral content in 6 steps, and CIO shares 8 things that CMOs need to know now. Enjoy!