Info sharing and seo for existing website

Info sharing and seo. Part1: Share User info: [login to view URL] and [login to view URL] build on the same engine (chameleon dating software) but different template. Each one has own database (MySQL). The database structure is similar. I need when user register at [login to view URL] user account will opened at [login to view URL] including user images. And vise Vera. Part2: Seo header. (Title,Description,Keywords) The site has geoip module, when user come from Russia for example, the site present in Russian language. BUT, the HTML title, description and keywords always default, English. 1. I need it custom for each language 2. [login to view URL] Contain data about the user , Name , Age City , Country So I need the title for [login to view URL] as following: [Name][Age] from [Country][City] want to meet You. Description example: Meet people in [City] from [Country] … ect. Keywords example: date for free in [Country] , free online chat in [City] ..ect