For providing facility if you are making a web site related to social networking purpose this will help you really. for this there is very simple solution which is called as OpenInviter
this will provide you plugins of different most popular social networking websites. to use this just make account on www.openinviter.com .
next go to download option add download to “General usage pack. Download this if you want to integrate it in an environment that doesn’t have an especially designed package.”
next extracts the zip folder a read help file this will make you more comfortable. for using it.follow all the steps one by one.
as you follow all the steps then for testing run example.php.
And then see the results………..
It is very usefull………….