Although there are a lot of young people on Facebook there are a lot of not so young ones too! A couple of my friends' parents are on there who are in their 70s (and so is Ray!!) It works for my business because I joined all the relevant groups and posted links to my site and it is number 3 in my referring sites now.
I guess it depends what your business is, if it's mostly b2b then I guess ecadamy is better but I find their website awful and not at all user friendly! I still haven't worked out how to add people to my network on there!
