"Not much" would be pretty much correct! But discussing topics like this should be in that area IMO!
I guess, where that fails is if a non member cant post in the members section.
I wont be giving advice that may help my competitors other than the run of the mill, which mower/trimmer etc.
Telling others how to advance the search results serves no purpose other than to hurt my business and in the end, my income!
I would suggest others think about it too!