API - expert wanted

On our existing website (a new social network) - we want to add some mashups and API functionality. e.g. users of myspace should just fill out username and password on our website and then being able to easily transfer pictures (or all available information) from myspace to our website and integrate it into their content on our website. the same should be enabled for youtube, bebo and other major platform-users. our website is a php5 (mysql5.0)-project. more detailed information after first contact. REAL experienced experts needed on a long-term relationship after successful testing-project.