Socal Posting Tool

Hi, I am looking for somebody to develop a social networking tool that will allow me to make one post but send it to multiple accounts, for example add it to my facebook wall, twitter, linkedin, and all other major social networking environments. Ideally this tool will be built in php and use mysql to store the usernames and passwords for the social media accounts. I would also like the system to be able to post to multiple accounts, so for example multiple facebook, multiple twitter, etc. Anybody with similar experience will be considered.