I find myself singing ESC songs all the time. I've told my brother (who plays the piano) to learn my favorites, so whenever I'm at my parents, we're jamming ESC songs. Hehe.
:Hm, I can't say that I talk to the people around me details about ESC, since the people are not very much interested in it, at least here where I live (in my hometown). I comment the events connected with ESC only with friends of mine who are fans and who follow it (only a few of them)....and that's it, more-less. Sometimes I sing the ESC songs, but strictly for my personal "leisure"
I have all ESC songs since 2000 and some older songs on my MP3-Player and I hear these songs every day. The people around me know, that I´m a big fan and some of them are also fans now
I´m singing some ESC songs at home for myself, as I´m not a good singer, I don´t try to sing in public.
When I organise parties I usually put a healthy dose of ESC or ESC-related songs in my playlist, and I will gladly enlighten my friends if they have questions :-D.