Absolutely love Rob, he's helped us out at www.serpiq.com quite a bit. We moved from freemium to a 7 day trial with the launch of v2.0 of our product, while at the same time raising our prices. While we did lose some customers due to switching to Stripe instead of another payment gateway, our metrics are looking really healthy and we have the opportunity to iterate a lot faster with a 7 day trial - then again, our product doesn't require a lot of time to realize value.