由于国内Twitter.com封锁，WordPress的Twitter.com更新错误，如下

Warning: fsockopen() [function.fsockopen]: unable to connect to twitter.com:80 (Connection timed out) in [MYSITE]/wp-includes/class-snoopy.php on line 1142

解决:

1、修改系统hosts文件，添加128.121.146.228 twitter.com

2、WordPress后台修改twitter tools插件源文件，所有‘http://twitter.com’修改为‘https://twitter.com’

3、修改wordpress程序wp_includes/class-snoopy.php中:var $port =80; 修改为 443;

OK.