Video is great, but as an expansion on a brief introduction. I for one would prefer to at least read a couple of sentences that tell me what an app/service doe

Video is great, but as an expansion on a brief introduction. I for one would prefer to at least read a couple of sentences that tell me what an app/service does before I have to watch a video, especially if I'm mobile at the time and/or it's hosted on Vimeo (great quality but looooong unforgiving buffer times in the UK)