LiveCode Forums.

I think it would be an idea to have a section on the forums for users to let others know about apps/software built with Livecode?

I have just got back into the language after a 6-year absence and written a small (and free) Android app just to see if I could.

It was approved by the app store on my first try has been published which I'm pleased with and would welcome feedback, good, bad or ugly.

Ill not post a link here in case it is not allowed but I think it would be good to have a section for those who want to show what they have created using Livecode.

Well, there is :

"Talking LiveCode - Anything beyond the basics in using the LiveCode language. Share your handlers, functions and magic here. "

...as well as the following -
Games
Creating Games? Developing something for fun?
...and...
Marketing Your Products
Share your experiences and ideas on how to market your LiveCode made products.

None of those fit your comfort zone?

Not really, I think it would be good to have a simple 'built with livecode' section with separate posts for each app so people can comment etc, great to show off what people can do with livecode, from simple app to something far more comprehensive.

I'll be cooking up something along those lines, but in the meantime you can check out the apps here:
https://livecode.com/studies/

For now, there's the Announcement forum. Not exactly what you mean but maybe close.