This is a catch-all question as I just wanted to have a section here related to anthologies.
Currently, whether an author has edited an anthology or has written a short story in it - it's all thrown together under the anthology section. And it's all a bit of a mess.
I have some really cool plans for the anthology section of each author. I want to list if they were an editor or a writer. I also want to highlight the short story they have written, and a few other things.
Unfortunately, it is very low on the priority list simply due to low interest from users. I've ran book sites since 2011 and I've had the anthology section like that on those sites since then, and I can count on one hand the amount of people that have ever e-mailed me with issues in regard to the anthology section.
So rest assured, there are some cool plans related to anthologies. It's just not going to be done anytime soon.