I've just taken a look at ViewedIt, which is a nice screen capture/video program. It's a Chrome extension, and it allows you to record your browser tab or screen. You can also include webcam as well, if you want to be viewed chatting. It's very simple to use, but it does have a few drawbacks at the moment, principle among them the fact that you can't save the video to put onto something like YouTube. However, you can share it across social media, and it's really good USP is that you can include a link into a Gmail. It creates a nice thumbnail, and someone can view it there and then AND you'll know that they have viewed it, and how much they've seen. You're limited to an hour video, but you can have as many as you want, stored for free, with no deletion. It's still in early stages yet, so there are things that you might expect to do which you can't - you can't delete for example, you have to get them to do it for you, but even with those restrictions, it's an interesting tool.