[helb]

> I also can't get this to work. Or figure out what it's supposed to do.

1. Paste a key from https://console.developers.google.com/apis/credentials into the "API Key" input

2. Paste channel/user URLs into the textarea, one per line

3. Click "Refresh", it will show five latest videos from each channel: https://vgy.me/tfseJu.png

[porjo]

Your screenshot is missing durations! That's a bug. Fixed now.