I found this rather interesting article about the ukulele gaining popularity... Did you know that Jimi Hendrix first learned the uke even before touching a guitar? Or that George Harisson ( The Beatles) loves it?
The last paragraph of it resume very well the ukulele world to me :
"People who play the ukulele seem to have a good sense of humor about themselves, their music and about life. The uke, in and of itself, is a contradiction. It is a serious instrument with a playful attitude. But it is even more than that: as the directors of Rock that Uke say, It's more than a tiny musical instrument…it's a state of mind."
You can read it here