I don't have perfect vision, so these sort of glows kick in automatically, especially when I'm tired. I't problematic enough to make me switch to a lower contrast theme when I work at night. It would make sense to apply an effect like that only if it were _increasing_ legibility.
Notice the rare case where the drop-shadow helps increase the contrast between foreground and background. You'll get props for doing that any time you pull it off.
Good point. But I may make the case, that ascii art is more about pictures, and less about text. So the reduced readability of text might not matter as much. I tried shadowless, and its less visually appealing.
/\_/\
____/ o o \
/~____ =-= /
(______)__m_m)
But in the context of ascii-diagrams, then I can see you point of not including stylised drop shadows.
I suppose what you like about the effect most, is that it fills the gaps that are intrinsic to ASCII art. But our brains are already wired to do that: http://bit.ly/1xeEci5. The shadow blur eats away at the details that are in fact a quality of ASCII art (like which characters were chosen to emulate a shape). The demonstrated CSS drop-shadow effect is really easily toggled by squinting your eyes instead: http://bit.ly/1DNrkXK.
Guess you're right in stating that it looks "cooler" though. Try making the shadows dark grey instead of black: http://cl.ly/image/073a412z0f34.
It would be relatively simple to do, I'm surprised that http://asciiflow.com/ doesn't have an option for it, but now that I think about it a little more I think most people create these ascii diagrams because they just want ascii for embedding in a text doc and probably? don't need to convert them.
Well the point of this, is to ensure that stuff like dashed lines, appears as a solid line. So in the context of ascii-art, this reduces the screen door effect (At the cost of visibility of alphanumeric texts).
If you look at the style, it's essentially just moving text characters closer to each other.
Although, I like the Mona Lisa example, I have to think that the point of ASCII art is to look like ASCII art because if it doesn't, then it's just a shitty picture. Cool POC tho.
Take a look at this a demo pic: http://cl.ly/image/1i0x2X3W3G0x
Notice the rare case where the drop-shadow helps increase the contrast between foreground and background. You'll get props for doing that any time you pull it off.