Greetings.

My name is Schimon, and I utilize XSLT extensively.

I would be glad to establish a site which would aggregate data from
friend sites about XSLT.

Are there people who might be interested?

We can utilize the software Slixfeed as an automated service for that
purpose.

https://git.xmpp-it.net/sch/Slixfeed

The XHTML interface of Slixfeed is made of Atom and XSLT.

Kind regards,
Schimon