First of all, I LOVE the thumbnail explorer! Often, you create a thumbnail on your computer and then have to export it to your phone to put it on Instagram, or other purely mobile sites, for marketing and promotion, but with thumbnail explorer, I can easily grab any of my videos thumbnails without access to my computer!
I thoroughly tested the random comment picker, works like a charm... Always wondered how people picked comments. This lifts all the emotional weight of picking someone in your audience.
The realtime sub count gives you more information than just a single # (subs), but gives you some basic information, such as total videos uploaded and total video views.
Seriously, this site is fast as hell!