Start live streaming if you have 100+ subscribers: All channels in good standing with at least a hundred subscribers will be able to live stream, within the next few weeks. Check your Account Features page for an “Enable” button, and click it if you're interested
Choose your best thumbnail: Help your video stand out by using a custom thumbnail. Make sure you only upload images that are representative of what viewers will see, like prominent stills from the video.
Via: http://youtubecreator.blogspot.jp/2013/08/investing-in-you-more-tools-to-build.html
Thanks Vitaliy--this looks interesting.
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