Not all knowledge gotten from forum can be considered valuable, considering that there as still some discussions featured in some boards that hold little or no benefit/relevance to any reader. Some discussions are just regular discussions.
It's my opinion that if anyone give more time in this forum then he/she easily go up.
True that you can learn a thing or two from this forum, but do not completely depend on forum alone for updated knowledge. The forum should not be seen as a substitute for following up on news, reading articles and publication etc. but as a plus to it.