As far as I know, there is only like five people who are:
a) actively lurking on TMO
b) still actively using N900

Maybe 3 of those people lives in Finland. So even though there is probably much more N900 lovers around, spreading the word to them may be difficult. About myself, my N900 died (broken usb port, only usable if I swap batteries), and I switched to Pro1. So even though still sympathize N900, I feel like it's over for me at least for a while. I believe it's the same for people; they have sweet memories of using N900, but still doesn't feel like meeting is necessary Too scary at least. But I'm quite sure that endso will soon be here to condemn my words and to prove that half of the world still uses Nxx0 because he as well still does.. So I believe you should invite endso to the gathering at least.