Thanks bdbch, (Boris, Fei)
Nerd snipe. I haven’t heard that one before. 
I’m with you all the way. That’s one reason I shifted to eurosky; more chance of getting orientated. Also. I’m no geek/nerd but even I can understand (n vague terms) “.. an interoperable app store that every PDS could expose to its users”.
So we’re getting close to my wet dream (watch out). But now we have two threads of conversation about the same dream on this thread - one about the marketing (from me) and one about future UI and development stuff (from you guys). They come together at https://atmosphereaccount.com/ as you’ve said.
Now is a time when we do need to consider that each PDS (at least the ones looking for members) will want attract a particular audience and (if we are to be good librarians) we should consider how we direct interested customers (I call them citizens) to their PLU’s PDS
PLU is a very English term meaning People Like Us. Some(time) with an interest, some(time) with a expertise, some(time) with a common geography. etc.
Getting a bit exciting, no? Another pommy saying; “watching the pennies drop”. A bit like the homer Simpson “Duh!”