I do not think that Paint.NET is useful at all. I would go for GIMP if I had to choose here.I think paint.net is a good software, and i'm think there is a site that's called picmonkey which is good to use
Inkscape is a free open source photoshop. You can create vector images on multiple layers. Thats how I make my thumbnails with cool lettering.I'd like to know the best program or software to create thumbnails, I still haven't got to making thumbnails on my videos but i'd like to know what software to use. I know photoshop is a good one bu it's too expensive, I'd like one that's free. thx