Forums are especially useful for obtaining answers to questions relating to "issues". As a moderator in a very large Lexus forum, I can tell you that this forum is often lifeless, no doubt because most Lexus vehicles are rock-steady reliable. On the other hand, the Corvette forum is always jammed, since there are so many things that go wrong with those cars (any generation). This is also true of most American vehicle web sites, for the same reason. Yes, enhancements are also a fairly large part of certain forums, especially off road and sports car forums, but believe me, no Jeep will come close to a Lexus when it comes to reliability. The same can be said when comparing a Ford Focus vs a Mazda 3 - much more "I got this check engine light/malfunctioning heater controls", etc in the Ford camp than the Mazda camp.
Reliability can be boring when it comes to forums, but it can also be a good sign.