Viral Inviter service

I want a clone of this site and its services: [login to view URL] There are a few changes to be made however. 1) Site design will be different and will have a lot of ajax features, so you must have a good understanding of ajax and how to make it downward compatible with browsers that do not support it. 2) In addition to the 3rd party services supported by [login to view URL] I want the following services. The scripts for these services are available at [login to view URL] Email: Gmail, Hotmail, Msn, Yahoo, Rediff, Aol, Mail Social Network: Facebook, Myspace, twitter, Hi5, Orkut, Bebo, freindster Social Bookmarking: All currently on the list 3) In order to control high volume loads. If a user uses the contact importer feature. The system should use the login information they provided to use the mail servers of their email provider to send out the emails. All other emails should go in a mailing log and a cron job should be set to send out "x" number of emails every "x number of minutes. 4) Unsubscribe feature. Should allow recepits to unsubcribe from the site that is sending them emails. 5) Should offer two kinds of services a) free service (ad supported) and b) paid service. Paid service is an upgrade to the free service and is charged monthly, so the payment processing via paypal should be designed for that. 6) Should have an Ad managment servive where I can control the ads displayed in outgoing emails, as well as doorway pages. I should be able to enter unique ads to individual sites. 7) Admin panel, should have detail statistics of all the opperations of the website, and I should be able to control the entire website easily from the admin panel. 8) Should be designed to have a language file, so I can add different language versions to the site later on.