I agree with your comments and fully understand the cut and paste issue. However, the added colored + sign should, hopefully, indicate that it needs to be removed after the paste.
I agree with your approach (as is now) to remind people to preview thier posts and edit long lines. Of course that leaves us with the same problem that Ripeyed mentioned. In addition, you may have noticed that the preview window is 'almost' full screen width and the actual post is, I'll guess, 80% of screen width. So if you were to diligently edit your code to fit the preview window, you still end up with the horiz. scroll.
and khaki, I (really) liked your avatar with the centered black frame best.
Perhaps the following could be done...
- Reduce the font size in code tag. (default)
- Eliminate the indent.
- Auto wrap the lines. (no cut & paste?? or is there?)
Bearing in mind that the majority of posts do not create a problem, but when they do, it affects all posts in the thread.
Take this post for example...
and look who the posters are