Usability testing for open-source projects?

I’m working (slowly) on an open-source project, and I was hoping to do some usability testing once it’s a bit further along. Also, hopefully the GIMP devs will notice this question ;-). I’m not sure how much can be done for $…
Scrollbar on the left

Is there a deep study that suggests to place a scrollbar on the right? Personally I move it to the left whenever possible (Firefox allow this, as well as xterm and emacs).
I know that placing a scrollbar on the left is consi…
Scrollbar on the left

Is there a deep study that suggests to place a scrollbar on the right? Personally I move it to the left whenever possible (Firefox allow this, as well as xterm and emacs).
I know that placing a scrollbar on the left is consi…
OK/Cancel on left/right?

Should OK button be on left of Cancel button or vice versa?
Are there any studies suggesting either of the solutions?
OK/Cancel on left/right?

Should OK button be on left of Cancel button or vice versa?
Are there any studies suggesting either of the solutions?
OK/Cancel on left/right?

Should OK button be on left of Cancel button or vice versa?
Are there any studies suggesting either of the solutions?
OK/Cancel on left/right?

Should OK button be on left of Cancel button or vice versa?
Are there any studies suggesting either of the solutions?
Interesting user interfaces from sci-fi movies & tv? [closed]
![Interesting user interfaces from sci-fi movies & tv? [closed]](https://uxsharelab.com/wp-content/themes/proxima/images/thumbnail-placeholder.gif)
This Ars Technica article discusses the design principles of the Star Trek LCARS touch-based user interface from The Next Generation as it was imagined in 1987 and how it relates to Apple’s iPad.
Reading this article led me …