1. Permission to use artwork?
People ask me this a lot so I figured I'd just make a FAQ page. My terms of use are fairly loose. Basically my artwork can be used for anything except commercial purposes. "Anything" includes stationary, webpage templates, tubes, signature tags, backgrounds, frames, etc. As for credit, just a "yenbui.com" would be fine. Any commissioned work, art that I've drawn for other people, may not be used in any way whatsoever, except for by their owners.
2. What tools or programs do you use?
Adobe Photoshop CS2, Corel Painter IX, Wacom Intuos2, Aiptek Hyperpen. Mainly just Photoshop and the Wacom tablet, probably the best tools out there. Expensive, but I wouldn't recommend anything else.
3. Art requests and commissions?
Free, no. Commission, yes. Though it depends largely on my mood at the moment and the amount of free time. I'd be willing to draw whatever it is you'd like. As for payment and other details, you can email me for more information.