Just burn the forum with fire, then nuke it from orbit and put a pancake on it.... Only way to be sure! 
On topic: I have been helped by people on this forum and I have never once looked at how many posts they have made and decided, based on that, if their answer was correct or not. But it seems like you did/do, OP.
But, thinking about it.. surely someone with less posts would be "less believed" (for use of some better words) than someone who has a crap load of posts you can trawl through to check out if they are legit or not?
And normally when someone does post some bull there is always people happy to say how wrong they are.

On topic: I have been helped by people on this forum and I have never once looked at how many posts they have made and decided, based on that, if their answer was correct or not. But it seems like you did/do, OP.

But, thinking about it.. surely someone with less posts would be "less believed" (for use of some better words) than someone who has a crap load of posts you can trawl through to check out if they are legit or not?
And normally when someone does post some bull there is always people happy to say how wrong they are.