1. i am optimizing a website by implementing techniques such as title, meta tags, header tags, bold tags etc... by doing so am i optimizing the website for all the major search engines google, yahoo, msn, ask or do i need to optimize separately for these 4 search engines except for uploading a sitemap file which is an xml version to these 4 search engines. 2. the web developers who have built the website have used php language and their website consists of a flash file which they want it to display as the header and the footer consists of links and the text at the center of the page changes depending on the links clicked on the footer. so there are 3 files included in index.php which are header.php links.php and footer.php each time a link is clicked from the footer the url is http://website.com/index.php?page=webdevelopment or http://website.com/index.php?page=software etc... so a query string is being passed and the relavant page content appears so basically there is only 1 page index.php for the entire website no matter which link is clicked on. i have managed to display a different title, different meta keywords and description tags each time a different link is clicked on from the footer section. ideally in order to optimize a website there should be separate files ex= webdevelopment.php software.php about.php etc... and each page will load newly and the content will be displayed. this way while link building there will be different links available. in my case though there are individual files like webdevelopment.php software.php etc... because the company does not want to load the flash file again and again they have choosed to use include() php function due to which the url for the website is either http://website.com or http://website.com/index.php?page=webdevelopment or http://website.com/index.php?page=software etc... also the size of the flash file is not very big and the width and height are also not all that big however the company wants to load the flash file only once and the rest of the time only the text in the center keeps changing. also i am able to optimize the content based on which link has been clicked and which appears at the center of the page, its only about the website having just 1 url one alternative is to load each page individually so that there will be more than 1 link for the website and this will be useful for link building purpose. can anyone please suggest as to what would be the best alternative for the situation of the website i am working on which uses include() and thereby ending up with only 1 url which might not be ideal from a SEO perspective. please advice the pros and cons for a given alternative so that i can decide which method to adopt for the website. any help will be greatly appreciated. thanks.