Sorry, if I miss understood the tone of your post. Would have been different if you had added something more direct to answer the question asked, until a sticky is offered.
Also many don't "see" the rest of the forums here. And a problem with a sticky is that a thread can get pretty long. As an example with the RAM question, someone might only get through a screen or two, and miss info on Crucial's browser driven pricing discussion.
And then you get into a situation of how many stickies would there be in each forum group. For it could end up with more stickies showing in the forum overview first page. Not sure what a good answer is.
I agree that there are many questions repeated here. Many I have chosen to ignore. RAM on the other hand is something that I will chime in on, only because of the "Crucial is the god of RAM" mantra.