Weibo

Adding XML Naming Space

<html xmlns:wb="http://open.weibo.com/wb">

Adding WB.JS

<script src="http://tjs.sjs.sinajs.cn/open/api/js/wb.js" type="text/javascript" charset="utf-8"></script>

Code of The Button

<wb:follow-button uid="2991975565" type="red_1" width="67" height="24" ></wb:follow-button>

Alternative

While the XML naming space cannot be added for some reasons, this is an alternative way.
Simply change the uid to yours, and paste it to wherever is desired to attached the button to.

<iframe style="vertical-align: -8px;" src="http://widget.weibo.com/relationship/followbutton.php?uid=5738333721" width="67" height="24" frameborder="0" scrolling="no" marginheight="0"></iframe>

Example

It is block by default since the blog implements HTTPS and the script load resources via HTTP.

Solution

Use the server as a proxy, download or cache resources on local server, then use the server as service provider.