savageorange said:
I'm skeptical, principally because you have shown examples of software that *are* relatively distinct, but there are many others that aren't distinct.

Basically all 2d paint programs cannot be reliably distinguished. Like, we can tell the difference between Paint and Photoshop, probably ;) But we can't tell the difference between MyPaint and Photoshop, GIMP and Photoshop, SAI and MyPaint, etc. This is because 99% of the difference in appearance comes from *how* the artist uses the software, not *what* the software specifically is. So tagging 2d software would definitely require off-site information (as opposed to 3d software, which might *sometimes require* offsite verification).

Even distinguishing one 3d program from another is fuzzy -- you don't "identify blender" so much as "determine it doesn't look like SFM or Daz3d" (In which case it could still be Maya or some more obscure modelling program. And a modeller like Blender can be hooked up to different renderers (eg. Yafray), the choice of renderer creates further subdivisions within the area of 'image feel')

One way of resolving that -- which I'm not happy with, but I am slightly more happy with than your solution -- is to extract program information from the image metadata. That is as close as possible to TWYS -- like resolution tags, it uses information that is definitively indicated by the image, even if you can't directly see it.
The downside of that is that it would be the artist's responsibility to ensure their images are correctly marked. Some programs do this automatically, some don't, so some manual intervention might be required. If the artist didn't include the information in-file, we wouldn't get to add it.

TL;DR I'm all for it.

In that case, some users, like myself, would have to take the time to look up the artist and see what program they use (which is pretty easy because most just outright list it) and most of those artists aren't going to jump between Blender/Maya/3DS which look similar. Most just pick one and stick with it (unless they're switching from SFM to Blender/Maya/3DS in which case it's obvious to tell which is which.

I'm all for it, because you can now search for what you like within the quite massive >28k 3D library with SFM taking up a good 1/3 and that's just what's tagged as SFM. Speaking of, I should go through and tag SFM stuff as SFM. Would be easier if the Blender tag was there so I could filter all of those out. 115 pages is daunting.