Still awaiting delivery of my Spark but just found out, via a YouTube video, that you can transfer data to your PC using the microUSB port on the back of the Spark, rather than taking out the microSD card. Now I've been reading a lot about the Spark recently, including the manual, and this is the first time I've heard about this useful technique. So, is it true and are there any downsides to transferring your stills and videos using this method?