Mmm. Yeah it's fine, but I wonder how many could be said to be "active".
Social media has its place but it has really killed forums.
Forums allow proper discussion and for information to be preserved and found easily, social media doesn't really.
The Knopfler Facebook page has over 20,000 fans, basically all happy clappers, someone posts something and you'll get a ton of people waxing lyrical about how great it or MK is.
It is what is is.