Because of my prior training and indoctorination, I tend to attack a problem relentlessly by studing every think I can about it.
Let me tell you, SEO is a mind warp that introduces more confusion than not.
For instance, backlinking for google SEO.
The pie is split over whether well written social bookmarking, thoughtful blog posting (do follow or not)or an informing article submission is worthwhile. You have guys on both sides of the fence arguing both ways.
I try to defer to the super experts, but even then...opinion is often divided.
So I try to rehash the site...taking from 7 to 45 pages over 7 weeks, really, really trying to enhance user experience---having helpful original technical advice they can't get anyhere else, the lowest pricing, and a nice easy structure. My bounce rate is indeed lower, the depth of visit is higher, and it seems that there are higher conversions. I think I might have the richest industry website in my little niche now.
So fresh content helps with SERPS, but then you have all of these examples of webpages older than the hills with no new content placing higher.
We are told that spammy backlinking will bite you....yet the company that scores #1 has a 100,000 spammy backlinks (#2 has 500). How does this person win? I will say I am trying to take some of my helpful contact to other niche resource/blog pages to use and link, but I have yet any biters.
I don't know...my SERPS have just moved only 5 places for a particular keyword in 7 weeks. I look at my competitors closely, and for the most part I am baffled.
I am just trying to optimize my time---this is hard work---as to what to do next.