`name` varchar(30) NOT NULL,
`icon` varchar(50) NOT NULL COMMENT 'icon filename',
`filter` enum('email','web','number','none') NOT NULL DEFAULT 'none' COMMENT 'filter type for addresses',
+ `link` varchar(255) NOT NULL COMMENT 'string used to forge an URL linking to the the profile page',
PRIMARY KEY (`network_type`)
) CHARSET=utf8 COMMENT='types of networking addresses';