GoogleGoogle Support Forum - Help, tips, techniques, tutorial and suggestion on how to get listed and get better ranking in Google, including trouble shooting failing ranking.
The SEO I could have recommended said he is retiring, give send him a PM anyway, maybe he is getting bored and want to get back in the game, he is OWG.
You can also contact one of our advertisers, the link on the top right hand of this forum.
Thanks
Not sure about the percentage but a significant portion of it is down to links, if you build a site with excellent meta tags, well optimised keywords etc but with no link pointing to it, I doubt if that site will rank highly or rank at all for any keywords so, yes, a large portion of SERP position is down to links (also quality of links matters, not just any rubbish link but quality links from sites with related contents).