33725 Seo Improvement

I'm searching a seo expert for helping me in the optimization of my sites. I have some sites in good positions, but we want to improve even more our position under certain keywords. In particular there are certain words we want to focus upon. Some of the sites I want to improve even more are [login to view URL] and others (we will discuss it in PMB). 1) I'd like to see someone with PROVEN track record for getting results under POPULAR keywords. If you're now starting out and have no proven examples to show me then please don't bid. 2) I know already a lot about SEO, but the fact is that we have to many sites and it is difficult to keep up to date all the informations. I need someone who knows what I don't know basically, proven strategies that are LEGAL and will be valid also in the future! I'd like also somebody with eyes open to new changes in Search Engines... 3) We can make all the needed changes based on your suggestions and we accept all ideas. But the best is having somebody able to do himself the basic needed changes in our sites (adding or removing a link, adding a sitemap etc...). Please discuss it in PMB. 4) If you are succesfull, this will be a BIG work as we have many sites, and we accept also susggestions on other keywords on wich to focus upon etc... With that in mind, please post message in PMB so we can go over details of the project and for you to show examples of your prior proven success rate. Search engines we want to focus on are Google and Yahoo, in that order of preference. Make the bid on a per site basis. We like bid based on results.