How to Program：病毒式行銷

我們常常會收到社群或交友網站某朋友寄來的邀請函，
其實是該網站提取朋友的聯絡人清單大量寄發的，
這就是所謂的病毒式行銷！
雖然很煩，但是對於剛開始起步想取得第一批使用者的網站來說滿有用的。

找了一些相關資料，關鍵字："tell a friend"、"retrieve contacts"
MsnPlez：php script to retrieve msn contacts http://www.phpclasses.org/browse/package/4229.html

Contact Grabber：可以存特定的網站取得聯絡人，包含Yahoo, Gmail, Hotmail, AOL, Lycos, Rediff, Orkut & MySpace, LinkedIn
http://sourceforge.net/projects/contactgrabber/

OpenHotmail： 將存取windows live hotmail的HTTP 協定文件化，並提供libraries讓程序員更易撰寫存取hotmail的應用程式
http://sourceforge.net/projects/open-hotmail/

OpenContacts.NET：OpenContacts.NET is open-source library for importing contacts from popular web-mail services. Now supports: GMail, Yahoo! Mail, Live (Hotmail).
http://sourceforge.net/projects/opencontactsnet/

Get your friend's contact information: designed to manage your firend's paper daytimer (address book, appointments, business cards, phone numbers, mail, MSN, ICQ etc) in a single application.
http://sourceforge.net/projects/getcontacts/