Haven't had a chance to download it yet, but it seems really close feature-wise to Screenflow from varasoftware.com, which we've used very successfully for usability testing recently. We were considering Morae initially, but Screenflow works with our Macs and ended up working out great. Plus, we really didn't need the extra analysis tools Morae offered anyway. I'll be interested to try this out now and see the differences now.