When I started to collect information about 'everything vibraphone' I entered 'vibraphone forums' in Google and it gave me two www sites (this one and the vibes.net?). The second one seemed to be abandoned and this one looks alive but with the total number of posts and slow rate of posting it's not easy to see it at the first sight.
I'm also registered at other musical instrument forums like guitar, sax, etc. and there are thousands of posts on those sites. Everything is moving there with dozens of posts every day.
Why is it so? Because vibraphones are not so popular as other instruments? Probably so but why? Is it because vibraphones are expensive instruments and only a limited number of people, possibly millionaires can afford them? :-)
Since I assume not all millionaires play vibraphones the amount of potential vibraphone players becomes even lower.
Any other ideas to demistify the situation?