I used to let youtube decide... now i open the vid up, watch it till i see something i like then screenshot and add some text.
I always pick an actual screenshot from my video (I will not stoop to putting google pictures in order to "con views") then overlay my channels logo onto it. Nothing pisses me off more than when you click on an interesting thumbnail, but its not actually a screen grab from the video....
Those thumbnails certainly do it for me!
I wouldn't, they work really well as they are.Sweet! Yea I'll kinda see if I can somehow incorporate some text overlay in the future if I get sick of looking at my logo, but for now I'm content. Love your name by the way...catchy!