The competition

There are a few commercial platforms available and quite a lot of homemade ones so clearly the interest is there.

[iframe width=”640″ height=”360″ src=”//www.youtube.com/embed/zNUBZfrOXUc”]

[iframe width=”640″ height=”360″ src=”//www.youtube.com/embed/hQLF06rwzVE”]

[iframe width=”640″ height=”360″ src=”//www.youtube.com/embed/yec5aoT5XhY”]

[iframe width=”640″ height=”360″ src=”//www.youtube.com/embed/nN0JvjgDugY”]

[iframe width=”640″ height=”360″ src=”//www.youtube.com/embed/bn3F1kBHlqU”]

[iframe width=”640″ height=”360″ src=”//www.youtube.com/embed/WD3FDvgfwhE”]