Not just that, it would be good if short stories can be indexed or cross-referenced to other places where they can be found.
For example, I read and review story X in anthology Y. But anybody else looking up X can discover it is also found online at site Z as well as in books A and B.
So far, I haven't found anything that does that.
Here's the index for Greg Egan's books and stories [ www.isfdb.org/cgi-bin/ea.cgi?79 ], for example. If you select a short fiction entry, a list of publications where the story appears is listed.
I don't know of a similar site for other categories of fiction.